• Anybody Using IPv6?

    From Farley Flud@21:1/5 to All on Thu May 15 18:42:47 2025
    XPost: comp.os.linux.advocacy

    GNU/Linux has total IPv6 capabilities but this is also fully
    configurable.

    Since I operate a standalone workstation that is only connected
    to the Internet via Comcast, my system and software configuration
    only includes IPv4. (My local network certainly does not require
    it.)

    IOW, I don't need IPv6 and therefore I exclude it.

    Does anybody use or need IPv6?

    I suppose that since the vast majority of GNU/Linux users depend
    on a distro and that since most distros automatically enable
    IPv6 the answer is that most users have IPv6 enabled whether they
    need it or not.



    --
    Systemd: solving all the problems that you never knew you had.

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  • From Shadow@21:1/5 to vallor on Sat May 17 15:13:28 2025
    On 17 May 2025 18:01:35 GMT, vallor <vallor@cultnix.org> wrote:

    On Thu, 15 May 2025 18:42:47 +0000, Farley Flud <ff@linux.rocks> wrote in ><pan$e6d88$f019cb49$2e3cccf9$253bfbf1@linux.rocks>:

    GNU/Linux has total IPv6 capabilities but this is also fully
    configurable.

    Since I operate a standalone workstation that is only connected to the
    Internet via Comcast, my system and software configuration only includes
    IPv4. (My local network certainly does not require it.)

    IOW, I don't need IPv6 and therefore I exclude it.

    Does anybody use or need IPv6?

    I suppose that since the vast majority of GNU/Linux users depend on a
    distro and that since most distros automatically enable IPv6 the answer
    is that most users have IPv6 enabled whether they need it or not.

    (It's considered good netiquette to announce a followup-to when
    crossposting. Please consider doing that in the future.)

    I didn't notice the OP had set a follow up to COLA. Had I
    noticed I wouldn't have replied....
    COLA is Troll-Land.
    []'s

    _ _ _ _ _ _ _
    $ ping -c 1 news.eternal-september.org
    PING news.eternal-september.org (2a01:4f9:4b:44c2::2) 56 data bytes
    64 bytes from news.eternal-september.org (2a01:4f9:4b:44c2::2): icmp_seq=1 >ttl=47 time=174 ms

    --- news.eternal-september.org ping statistics ---
    1 packets transmitted, 1 received, 0% packet loss, time 0ms
    rtt min/avg/max/mdev = 174.342/174.342/174.342/0.000 ms
    _ _ _ _ _ _ _

    IPv6 is the future. I think more and more people are using it,
    since their equipment and clients "just work" with it.

    (There is a learning curve, though -- but there was with IPv4 too.)
    --
    Don't be evil - Google 2004
    We have a new policy - Google 2012
    Google Fuchsia - 2021

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  • From Marc Haber@21:1/5 to Farley Flud on Sun May 18 09:59:10 2025
    [apologies for falling into the Troll's Followup-To trap]

    Answers to my article in the advocacy group will not be read.

    Farley Flud <ff@linux.rocks> wrote:
    GNU/Linux has total IPv6 capabilities but this is also fully
    configurable.

    Since I operate a standalone workstation that is only connected
    to the Internet via Comcast, my system and software configuration
    only includes IPv4. (My local network certainly does not require
    it.)

    IOW, I don't need IPv6 and therefore I exclude it.

    That is a stupid idea. Your ISP might finally gain some clue and
    finally enable IPv6 after it has been mandatory on the Internet for a
    decade.

    Does anybody use or need IPv6?

    North America is cursed with ample IPv4 resources. Not all continents
    have that "luxury" of not being forced off an obsolete proto that
    needs crutches to limp.

    I suppose that since the vast majority of GNU/Linux users depend
    on a distro and that since most distros automatically enable
    IPv6 the answer is that most users have IPv6 enabled whether they
    need it or not.

    A host with IPv6 enabled has absolutely no disadvantages over a host
    that has IPv6 deliberately disabled. IPv6 doesn't autoconfigure if the
    network doesn't offer it.

    IPv6 allows me to reach any host on my local network directly from the
    network. I use this daily when I'm traveling or working at a different
    site to access my infrastructure.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Popping Mad@21:1/5 to vallor on Sun May 18 03:26:46 2025
    XPost: comp.os.linux.advocacy

    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.


    fuck ip6

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  • From Carlos E. R.@21:1/5 to Marc Haber on Sun May 18 11:12:56 2025
    On 2025-05-18 09:59, Marc Haber wrote:
    [apologies for falling into the Troll's Followup-To trap]

    Answers to my article in the advocacy group will not be read.

    Farley Flud <ff@linux.rocks> wrote:
    GNU/Linux has total IPv6 capabilities but this is also fully
    configurable.

    Since I operate a standalone workstation that is only connected
    to the Internet via Comcast, my system and software configuration
    only includes IPv4. (My local network certainly does not require
    it.)

    IOW, I don't need IPv6 and therefore I exclude it.

    That is a stupid idea. Your ISP might finally gain some clue and
    finally enable IPv6 after it has been mandatory on the Internet for a
    decade.

    Does anybody use or need IPv6?

    North America is cursed with ample IPv4 resources. Not all continents
    have that "luxury" of not being forced off an obsolete proto that
    needs crutches to limp.

    I suppose that since the vast majority of GNU/Linux users depend
    on a distro and that since most distros automatically enable
    IPv6 the answer is that most users have IPv6 enabled whether they
    need it or not.

    A host with IPv6 enabled has absolutely no disadvantages over a host
    that has IPv6 deliberately disabled. IPv6 doesn't autoconfigure if the network doesn't offer it.

    IPv6 allows me to reach any host on my local network directly from the network. I use this daily when I'm traveling or working at a different
    site to access my infrastructure.

    My ISP did a beta test of IPv6. Something must have gone wrong, they
    seem to have aborted and not deployed IPv6 to the public, except on phones.

    --
    Cheers,
    Carlos E.R.

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  • From Chris Ahlstrom@21:1/5 to All on Sun May 18 07:16:25 2025
    XPost: comp.os.linux.advocacy

    % wrote this post while blinking in Morse code:

    vallor wrote:

    <snip>

    of course there is you have to know how to post in usenet

    Why you following vallor around like a wet nappy?

    --
    Whenever a system becomes completely defined, some damn fool discovers something which either abolishes the system or expands it beyond recognition.

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  • From rbowman@21:1/5 to Carlos E. R. on Sun May 18 20:18:02 2025
    On Sun, 18 May 2025 11:12:56 +0200, Carlos E. R. wrote:

    My ISP did a beta test of IPv6. Something must have gone wrong, they
    seem to have aborted and not deployed IPv6 to the public, except on
    phones.

    Shortly after IPv6 was supported by Windows Server one of our departments configured it, possibly by mistake. They effectively isolated themselves
    from the rest of the company, including the main servers. That got rolled
    back quickly.

    Perhaps the correct thing to do would have been to make it work company
    wide but nobody is going to sign off on an expensive project to fix
    something that ain't broken -- yet.

    Since my internet connection is through Verizon wireless I have both IPv4
    and IPv6 external addresses. They're transitory and while I can find out
    what they are I don't have any need to know.

    Even better, it looks like I'm in Montrose Colorado today.

    The devices on the WiFi LAN also have IPv6 addresses along with IPv4.
    However if I want to ssh, sftp, or vnc into one of them, I know and use
    the IPv4 address.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Mon May 19 08:09:05 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    My ISP did a beta test of IPv6. Something must have gone wrong, they
    seem to have aborted and not deployed IPv6 to the public, except on phones.

    Easy answer: They are stupid.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to rbowman on Mon May 19 08:11:28 2025
    rbowman <bowman@montana.com> wrote:
    On Sun, 18 May 2025 11:12:56 +0200, Carlos E. R. wrote:

    My ISP did a beta test of IPv6. Something must have gone wrong, they
    seem to have aborted and not deployed IPv6 to the public, except on
    phones.

    Shortly after IPv6 was supported by Windows Server one of our departments >configured it, possibly by mistake. They effectively isolated themselves
    from the rest of the company, including the main servers. That got rolled >back quickly.

    You need to know something about the protocol. Likely your network
    department half set up IPv6 and then stopped doing it, leaving it with
    semi or non-working IPv6. Of course this is bound to fail.

    IPv4 should have continued working seamlessly.

    Perhaps the correct thing to do would have been to make it work company
    wide but nobody is going to sign off on an expensive project to fix
    something that ain't broken -- yet.

    IPv4 IS broken. It has been broken for 30 years, in a way that made
    many people think that a network protocol must be broken to work.

    Since my internet connection is through Verizon wireless I have both IPv4
    and IPv6 external addresses. They're transitory and while I can find out
    what they are I don't have any need to know.

    What is a transitory IPv6 address?

    Even better, it looks like I'm in Montrose Colorado today.

    Your ISP is stupid and didn't correctly register their IPv6 networks.

    The devices on the WiFi LAN also have IPv6 addresses along with IPv4.
    However if I want to ssh, sftp, or vnc into one of them, I know and use
    the IPv4 address.

    Use DNS.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From rbowman@21:1/5 to Marc Haber on Mon May 19 07:11:55 2025
    On Mon, 19 May 2025 08:11:28 +0200, Marc Haber wrote:


    Since my internet connection is through Verizon wireless I have both
    IPv4 and IPv6 external addresses. They're transitory and while I can
    find out what they are I don't have any need to know.

    What is a transitory IPv6 address?

    Verizon assigns an IP from their pool. If the wireless router reboots it
    may or may not get the same apparent external address.


    Even better, it looks like I'm in Montrose Colorado today.

    Your ISP is stupid and didn't correctly register their IPv6 networks.

    I'll say it again. slowly. Verizon wireless. Figure out how CGNAT works.
    The edge server may be in Colorado or Utah. I've even seen Kansas. If I go
    to a site like https://whatismyipaddress.com/ it's going to reflect where
    the server is.

    For most purposes it doesn't make a difference. However if I go to a site
    like homedepot.com and click on an item it will tell me I can pick it up
    at the Castle Rock Colorado store, which is close to 1000 miles away.

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  • From Marc Haber@21:1/5 to rbowman on Mon May 19 09:33:22 2025
    rbowman <bowman@montana.com> wrote:
    On Mon, 19 May 2025 08:11:28 +0200, Marc Haber wrote:
    Since my internet connection is through Verizon wireless I have both
    IPv4 and IPv6 external addresses. They're transitory and while I can
    find out what they are I don't have any need to know.

    What is a transitory IPv6 address?

    Verizon assigns an IP from their pool. If the wireless router reboots it
    may or may not get the same apparent external address.

    That would be a dynamic address. Same like for IPv4, only in IPv4 that complexity is hidden behind another layer of complexity named NAT.
    Without NAT, you couldn't use more than one device on your LAN because
    your ISP is unlikely to assign more than one IPv4 address to your
    network. A clueful ISP would assign a /56 IPv6, which gives you enough addresses for 256 internal networks, each one with more addresses than
    you could afford the power to run computers on.


    Even better, it looks like I'm in Montrose Colorado today.

    Your ISP is stupid and didn't correctly register their IPv6 networks.

    I'll say it again. slowly. Verizon wireless. Figure out how CGNAT works.

    IPv6 doesn't use NAT nor CGNAT.

    The edge server may be in Colorado or Utah. I've even seen Kansas. If I go
    to a site like https://whatismyipaddress.com/ it's going to reflect where >the server is.

    Right, because ISPs are stupid. Geo-IP is stupid as well, but alas.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Marc Haber on Mon May 19 15:37:19 2025
    On 2025-05-19 14:54, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-19 08:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-18 05:45, c186282 wrote:
      As for IPV6 ... my ISP doesn't use it. NO use at
      all - so I disable it to prevent problems.

    I don't have any problem with it enabled.

    I think I had some issue years ago, bu I have forgotten about it.

    that's how it's supposed to work. On the Internet Exchance Points, the
    majority of traffic is IPv6 in these days.

    It is my ISP who has a problem. They haven't said which, but my educated
    guess is that many of the routers they installed are faulty. For
    example, mine does not protect the LAN with a firewall on IPv6, all
    machines are directly exposed.

    I would only expect firewall functionality on a device that claims to
    be a firewall. That being said, such functionality is vitally
    important for an end user network.

    Can you disable IPv6 on the router? That would be easier than doing so
    on every device on the network, and also easier to revert should the
    IPv6 support of your ISP become useable at some future point in time.

    You don't understand. I say that the ISP is not deploying IPv6 because
    their routers (which are almost mandatory) are faulty and don't fully
    support IPv6. As for example, the firewall, which is an absolute
    necessity on IPv6⁽¹⁾, is not functional on IPv6 mode. It is working fine on IPv4.

    We are talking home users. The ISP supplied router does many things.
    Even the house phone is plugged into it.

    (1) Because there is no NAT. All machines inside the home become
    directly accessible from internet when using IPv6.

    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Mon May 19 16:36:22 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    We are talking home users.

    So am I.

    The ISP supplied router does many things.
    Even the house phone is plugged into it.

    I am deeply sorry that you Americans neither have decent ISPs nor can
    you purchase decent routers.

    Grüße
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Marc Haber on Mon May 19 17:31:45 2025
    On 2025-05-19 16:36, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    We are talking home users.

    So am I.

    The ISP supplied router does many things.
    Even the house phone is plugged into it.

    I am deeply sorry that you Americans neither have decent ISPs nor can
    you purchase decent routers.

    I am not American.

    --
    Cheers,
    Carlos E.R.

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Mon May 19 17:58:23 2025
    On 19/05/2025 15:36, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    We are talking home users.

    So am I.

    The ISP supplied router does many things.
    Even the house phone is plugged into it.

    I am deeply sorry that you Americans neither have decent ISPs nor can
    you purchase decent routers.

    Grüße
    Marc
    But they have King Donald and the Lone Skunk!

    --
    "And if the blind lead the blind, both shall fall into the ditch".

    Gospel of St. Mathew 15:14

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  • From Marc Haber@21:1/5 to Popping Mad on Tue May 20 09:59:17 2025
    Popping Mad <rainbow@colition.gov> wrote:
    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.

    fuck ip6

    This is a raging example how pseudonymous people say things that would
    be unwise to say in a non-anonymous environment.

    IPv6 is a protocol. It is a good one. It doesn't hurt anybody. Why
    should it be "fucked"?

    I think that this kind of hate should go a different way.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Nuno Silva@21:1/5 to Marc Haber on Tue May 20 09:21:51 2025
    On 2025-05-20, Marc Haber wrote:

    Popping Mad <rainbow@colition.gov> wrote:
    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.

    fuck ip6

    This is a raging example how pseudonymous people say things that would
    be unwise to say in a non-anonymous environment.

    IPv6 is a protocol. It is a good one. It doesn't hurt anybody. Why
    should it be "fucked"?

    I think that this kind of hate should go a different way.

    How is this different from showing dislike of names which look
    artificial?

    --
    Nuno Silva

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 10:37:46 2025
    On 20/05/2025 08:59, Marc Haber wrote:
    Popping Mad <rainbow@colition.gov> wrote:
    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.

    fuck ip6

    This is a raging example how pseudonymous people say things that would
    be unwise to say in a non-anonymous environment.

    IPv6 is a protocol. It is a good one. It doesn't hurt anybody. Why
    should it be "fucked"?

    I think that this kind of hate should go a different way.

    Well it is another apparent 'designed by comp scis to be as opaque as
    possible with a hundred bells and whistles that no one will ever use'

    As c186282 said. why not just prepend or append another '.000.'
    --
    Labour - a bunch of rich people convincing poor people to vote for rich
    people by telling poor people that "other" rich people are the reason
    they are poor.

    Peter Thompson

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  • From Marc Haber@21:1/5 to The Natural Philosopher on Tue May 20 12:15:19 2025
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    Well it is another apparent 'designed by comp scis to be as opaque as >possible with a hundred bells and whistles that no one will ever use'

    You obviously have no clue about how RFCs are written.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to The Natural Philosopher on Tue May 20 12:14:19 2025
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 05:17, c186282 wrote:
      But for NOW ... yea ... I disable IPV6. My ISP
      doesn't even do it, so why suffer the probs ?

    +1.
    Its so radically different that I cant be arsed to go through a learning >curve on something I don't need right now

    This is a really stupid stance.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 11:33:07 2025
    On 20/05/2025 11:15, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    Well it is another apparent 'designed by comp scis to be as opaque as
    possible with a hundred bells and whistles that no one will ever use'

    You obviously have no clue about how RFCs are written.

    They are written by people who *like writing RFCs*.

    Nuff said!

    --
    “Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong remedies.”
    ― Groucho Marx

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 11:35:32 2025
    On 20/05/2025 11:14, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 05:17, c186282 wrote:
      But for NOW ... yea ... I disable IPV6. My ISP
      doesn't even do it, so why suffer the probs ?

    +1.
    Its so radically different that I cant be arsed to go through a learning
    curve on something I don't need right now

    This is a really stupid stance.

    No. It is a thoroughly pragmatic stance.
    Never learn anything you dont need to know to reach your immediate
    objective. It saves time

    Of course if your immediate objective is to be a smartarse, then fair
    enough.

    --
    “It is dangerous to be right in matters on which the established
    authorities are wrong.”

    ― Voltaire, The Age of Louis XIV

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  • From Carlos E. R.@21:1/5 to Marc Haber on Tue May 20 13:04:10 2025
    On 2025-05-20 12:21, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 09:00, Marc Haber wrote:
    vallor <vallor@cultnix.org> wrote:
    On Sun, 18 May 2025 10:02:22 +0200, Marc Haber
    <mh+usenetspam1118@zugschl.us> wrote in <100c46e$3c1el$1@news1.tnib.de>: >>>>>> As for IPV6 ... my ISP doesn't use it. NO use at all - so I disable >>>>>> it to prevent problems.

    That's a really stupid idea.

    I suggest he enable it from time to time to see if the ISP
    has got it working.

    I suggest not disabling it in in the first place. It doesn't hurt when
    it's unused and unconfigured.

    Oh but it does, when you get ipV6 addresses returned by DNS and you cant
    reach them...

    And where is the problem with that?

    You don't understand. You want to access gmail, for instance. The
    address resolves to some IPv6 and some IPv4 addresses, and your computer
    tries to connect on the IPv6 addresses. The application shows an error:
    address unreachable.


    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to The Natural Philosopher on Tue May 20 17:45:30 2025
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 11:14, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 05:17, c186282 wrote:
      But for NOW ... yea ... I disable IPV6. My ISP
      doesn't even do it, so why suffer the probs ?

    +1.
    Its so radically different that I cant be arsed to go through a learning >>> curve on something I don't need right now

    This is a really stupid stance.

    No. It is a thoroughly pragmatic stance.

    We need to agree to disagree here.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to The Natural Philosopher on Tue May 20 17:47:33 2025
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 11:15, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    Well it is another apparent 'designed by comp scis to be as opaque as
    possible with a hundred bells and whistles that no one will ever use'

    You obviously have no clue about how RFCs are written.

    They are written by people who *like writing RFCs*.

    Nuff said!

    We have to thank those guys. They are wise and they brought us the
    Internet.

    The IPv6 RFC's main authors are a retired person from Cisco and the
    Bell Labs and one active employee from Check Point Software. So far
    "comp scis".

    What have you done for the Internet? _My_ accomplishments are modest,
    but you can use a search engine to find those.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Carlos E. R. on Tue May 20 17:49:02 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 12:21, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 09:00, Marc Haber wrote:
    vallor <vallor@cultnix.org> wrote:
    On Sun, 18 May 2025 10:02:22 +0200, Marc Haber
    <mh+usenetspam1118@zugschl.us> wrote in <100c46e$3c1el$1@news1.tnib.de>: >>>>>>> As for IPV6 ... my ISP doesn't use it. NO use at all - so I disable >>>>>>> it to prevent problems.

    That's a really stupid idea.

    I suggest he enable it from time to time to see if the ISP
    has got it working.

    I suggest not disabling it in in the first place. It doesn't hurt when >>>> it's unused and unconfigured.

    Oh but it does, when you get ipV6 addresses returned by DNS and you cant >>> reach them...

    And where is the problem with that?

    You don't understand. You want to access gmail, for instance. The
    address resolves to some IPv6 and some IPv4 addresses, and your computer >tries to connect on the IPv6 addresses. The application shows an error: >address unreachable.

    Only that that is not the case.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 17:00:04 2025
    On 20/05/2025 16:45, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 11:14, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 05:17, c186282 wrote:
      But for NOW ... yea ... I disable IPV6. My ISP
      doesn't even do it, so why suffer the probs ?

    +1.
    Its so radically different that I cant be arsed to go through a learning >>>> curve on something I don't need right now

    This is a really stupid stance.

    No. It is a thoroughly pragmatic stance.

    We need to agree to disagree here.

    No. You choose to disagree. With a perfectly sane statyement utterly in
    the spirit of Occam's Razor.

    "Technology should not be studied or created beyond necessity."


    --
    “But what a weak barrier is truth when it stands in the way of an hypothesis!”

    Mary Wollstonecraft

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 17:01:50 2025
    On 20/05/2025 16:47, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 11:15, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    Well it is another apparent 'designed by comp scis to be as opaque as
    possible with a hundred bells and whistles that no one will ever use'

    You obviously have no clue about how RFCs are written.

    They are written by people who *like writing RFCs*.

    Nuff said!

    We have to thank those guys. They are wise and they brought us the
    Internet.

    The IPv6 RFC's main authors are a retired person from Cisco and the
    Bell Labs and one active employee from Check Point Software. So far
    "comp scis".

    What have you done for the Internet?

    I rolled it out across the UK

    Built the first UK web server, and the biggest UK mail server.

    Installed Internet in the Channel Islands

    I didnt have time for any RFCs.

    _My_ accomplishments are modest,
    but you can use a search engine to find those.


    --
    When plunder becomes a way of life for a group of men in a society, over
    the course of time they create for themselves a legal system that
    authorizes it and a moral code that glorifies it.

    Frédéric Bastiat

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Tue May 20 17:02:25 2025
    On 20/05/2025 16:49, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 12:21, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 09:00, Marc Haber wrote:
    vallor <vallor@cultnix.org> wrote:
    On Sun, 18 May 2025 10:02:22 +0200, Marc Haber
    <mh+usenetspam1118@zugschl.us> wrote in <100c46e$3c1el$1@news1.tnib.de>: >>>>>>>> As for IPV6 ... my ISP doesn't use it. NO use at all - so I disable
    it to prevent problems.

    That's a really stupid idea.

    I suggest he enable it from time to time to see if the ISP
    has got it working.

    I suggest not disabling it in in the first place. It doesn't hurt when >>>>> it's unused and unconfigured.

    Oh but it does, when you get ipV6 addresses returned by DNS and you cant >>>> reach them...

    And where is the problem with that?

    You don't understand. You want to access gmail, for instance. The
    address resolves to some IPv6 and some IPv4 addresses, and your computer
    tries to connect on the IPv6 addresses. The application shows an error:
    address unreachable.

    Only that that is not the case.

    Seen it happen.

    --
    When plunder becomes a way of life for a group of men in a society, over
    the course of time they create for themselves a legal system that
    authorizes it and a moral code that glorifies it.

    Frédéric Bastiat

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  • From Carlos E. R.@21:1/5 to The Natural Philosopher on Tue May 20 18:34:51 2025
    On 2025-05-20 18:02, The Natural Philosopher wrote:
    On 20/05/2025 16:49, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 12:21, Marc Haber wrote:
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 20/05/2025 09:00, Marc Haber wrote:
    vallor <vallor@cultnix.org> wrote:
    On Sun, 18 May 2025 10:02:22 +0200, Marc Haber
    <mh+usenetspam1118@zugschl.us> wrote in
    <100c46e$3c1el$1@news1.tnib.de>:
         As for IPV6 ... my ISP doesn't use it. NO use at all - so >>>>>>>>> I disable
         it to prevent problems.

    That's a really stupid idea.

    I suggest he enable it from time to time to see if the ISP
    has got it working.

    I suggest not disabling it in in the first place. It doesn't hurt
    when
    it's unused and unconfigured.

    Oh but it does, when you get ipV6 addresses returned by DNS and you
    cant
    reach them...

    And where is the problem with that?

    You don't understand. You want to access gmail, for instance. The
    address resolves to some IPv6 and some IPv4 addresses, and your computer >>> tries to connect on the IPv6 addresses. The application shows an error:
    address unreachable.

    Only that that is not the case.

    Seen it happen.

    Me too. I asked for advice, and the solution was to give preference to
    IPv4 over 6.

    Possibly there was some bad configuration somewhere, but where? If it
    was out there, it was out of my reach.

    It has not happened to me for some years, though. Go figure. Did my
    distro do something? Dunno.


    Consider that, for instance, this laptop has an IPv6 address:

    cer@Isengard:~> ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 192.168.1.16 netmask 255.255.0.0 broadcast 192.168.255.255
    inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link>
    ether 4c:cc:6a:61:50:a1 txqueuelen 1000 (Ethernet)
    ...

    So applications thought that IPv6 was available.


    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Tue May 20 19:43:10 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    Consider that, for instance, this laptop has an IPv6 address:

    cer@Isengard:~> ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 192.168.1.16 netmask 255.255.0.0 broadcast 192.168.255.255
    inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link>
    ether 4c:cc:6a:61:50:a1 txqueuelen 1000 (Ethernet)
    ...

    This laptop has an IPv6 link local address.

    Btw, the GNU/Linux world has been using iproute2 for two decades now.

    What does the IPv6 routing table of the system in question say?

    So applications thought that IPv6 was available.

    Tries to use it, gets a host unreachable, SHOULD¹ try again with the
    next IP address associated with the target hostname, which might
    happen to be IPv4, tries to use it, connects successfully.

    Different behavior is a bug.

    ¹ in the RFC2119 sense
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Marc Haber on Tue May 20 19:52:26 2025
    On 2025-05-20 19:43, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    Consider that, for instance, this laptop has an IPv6 address:

    cer@Isengard:~> ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 192.168.1.16 netmask 255.255.0.0 broadcast 192.168.255.255 >> inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link> >> ether 4c:cc:6a:61:50:a1 txqueuelen 1000 (Ethernet)
    ...

    This laptop has an IPv6 link local address.

    I know. That one is automatic.

    And also a given global address that I personally wrote.


    Btw, the GNU/Linux world has been using iproute2 for two decades now.

    I am aware.

    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some
    years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16 cer@Isengard:~>


    So applications thought that IPv6 was available.

    Tries to use it, gets a host unreachable, SHOULD¹ try again with the
    next IP address associated with the target hostname, which might
    happen to be IPv4, tries to use it, connects successfully.

    Different behavior is a bug.

    ¹ in the RFC2119 sense

    The gai change makes things go faster, by not trying IPv6 first.

    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Tue May 20 23:14:38 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some
    years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16 >cer@Isengard:~>

    That is not the IPv6 routing table.

    So applications thought that IPv6 was available.

    Tries to use it, gets a host unreachable, SHOULD¹ try again with the
    next IP address associated with the target hostname, which might
    happen to be IPv4, tries to use it, connects successfully.

    Different behavior is a bug.

    ¹ in the RFC2119 sense

    The gai change makes things go faster, by not trying IPv6 first.

    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Marc Haber on Wed May 21 03:46:45 2025
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some
    years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.


    So applications thought that IPv6 was available.

    Tries to use it, gets a host unreachable, SHOULD¹ try again with the
    next IP address associated with the target hostname, which might
    happen to be IPv4, tries to use it, connects successfully.

    Different behavior is a bug.

    ¹ in the RFC2119 sense

    The gai change makes things go faster, by not trying IPv6 first.

    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    It is the network speed that matters, which is much slower.

    --
    Cheers,
    Carlos E.R.

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  • From c186282@21:1/5 to The Natural Philosopher on Tue May 20 23:42:59 2025
    On 5/20/25 5:37 AM, The Natural Philosopher wrote:
    On 20/05/2025 08:59, Marc Haber wrote:
    Popping Mad <rainbow@colition.gov> wrote:
    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.

    fuck ip6

    This is a raging example how pseudonymous people say things that would
    be unwise to say in a non-anonymous environment.

    IPv6 is a protocol. It is a good one. It doesn't hurt anybody. Why
    should it be "fucked"?

    I think that this kind of hate should go a different way.

    Well it is another apparent 'designed by comp scis to be as opaque as possible with a hundred bells and whistles that no one will ever use'

    As c186282 said. why not just prepend or append another '.000.'

    Hey, it'd WORK - kinda smoothly.

    Backwards compatibility kinda easy.

    Also, the NUMBERS are things people can UNDERSTAND,
    unlike all the long HEX crap in IPV6

    IPV4 = unexpectedly proved a bit inadequate

    IPV6 = horrible overkill 'solution'

    IPV5 ... my proposal ... maybe the best and
    most transparent. Good for the next 50 years
    fer-sure.

    Alt ... use the 'ports' idea - 123.123.123.123:22222

    Again, a literal few lines of IQ added to the needed
    utilities ... no 'port' = IPV4 address.

    These are numbers HUMANS can read, remember, understand.

    Don't know WHERE the IPV6 stuff was coming from - TOO tech
    IMHO.

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  • From vallor@21:1/5 to robin_listas@es.invalid on Wed May 21 03:16:52 2025
    On Tue, 20 May 2025 19:52:26 +0200, "Carlos E. R."
    <robin_listas@es.invalid> wrote in <m93tqqF8pgcU15@mid.individual.net>:

    On 2025-05-20 19:43, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    Consider that, for instance, this laptop has an IPv6 address:

    cer@Isengard:~> ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 192.168.1.16 netmask 255.255.0.0 broadcast 192.168.255.255 >>> inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link> >>> ether 4c:cc:6a:61:50:a1 txqueuelen 1000 (Ethernet)
    ...

    This laptop has an IPv6 link local address.

    I know. That one is automatic.

    And also a given global address that I personally wrote.

    I'm wondering what the purpose of the global address is?

    If you don't have global IPv6 reachability, why have a global
    address (bogus or otherwise)?

    --
    -v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090 Ti
    OS: Linux 6.14.7 Release: Mint 22.1 Mem: 258G
    "RamDisk is *not* an installation procedure."

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  • From Marc Haber@21:1/5 to vallor on Wed May 21 08:07:02 2025
    vallor <vallor@cultnix.org> wrote:
    If you don't have global IPv6 reachability, why have a global
    address (bogus or otherwise)?

    So that you do not need to renumber when you eventually get connected.
    There are more than enough IPv6 addresses to do it this way, this is
    one of IPv6's major advantages.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to c186282@nnada.net on Wed May 21 08:03:35 2025
    c186282 <c186282@nnada.net> wrote:
    IPV4 = unexpectedly proved a bit inadequate

    totally inadequate.

    IPV6 = horrible overkill 'solution'

    I violently disagree.

    It is IPv4 that needs overkill 'solutions' to be kept alive.

    IPV5 ... my proposal ... maybe the best and
    most transparent. Good for the next 50 years
    fer-sure.

    Horrible.

    These are numbers HUMANS can read, remember, understand.

    IP Adresses were never meant to be remembered or understood.

    Don't know WHERE the IPV6 stuff was coming from - TOO tech
    IMHO.

    It is a sane, nicely designed, simple protocol with a lot of
    flexibility that needs less worarounds that IPv4 does.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Carlos E. R. on Wed May 21 08:05:45 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some
    years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.

    The correct command is ip -6 route.

    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    It is the network speed that matters, which is much slower.

    There is zero evidence about IPv6 network speed being slower than IPv4
    on a feature-par network.

    Of course there are stupid ISPs who that send IPv6 on absurd detours.
    Those need to be put out of business.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Nuno Silva@21:1/5 to Marc Haber on Wed May 21 09:13:20 2025
    On 2025-05-21, Marc Haber wrote:

    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some >>>> years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.

    The correct command is ip -6 route.

    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    Yet you keep doing the same about judging people. That's hypocrisy at
    work.

    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    It is the network speed that matters, which is much slower.

    There is zero evidence about IPv6 network speed being slower than IPv4
    on a feature-par network.

    Of course there are stupid ISPs who that send IPv6 on absurd detours.
    Those need to be put out of business.

    Can you provide evidence that such a delay will never happen without
    broken routes? Or is it up to the implementation that asks for the
    address?

    While I don't recall details, I think I've seen and read about this
    behaviour too. Only for one case with my computers do I remember it
    being a stale route or assignment. For those back in the past I don't
    recall much.

    I was planning not to mention this, given I don't have much to recall,
    but if you're going to insist on that aggressive approach, judging
    people, taking a chance at bullying if someone dares to use ifconfig,
    and at the same time asserting the problem doesn't exist, I don't think
    I can afford not to comment.

    --
    Nuno Silva

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  • From Carlos E. R.@21:1/5 to vallor on Wed May 21 10:39:32 2025
    On 2025-05-21 05:16, vallor wrote:
    On Tue, 20 May 2025 19:52:26 +0200, "Carlos E. R."
    <robin_listas@es.invalid> wrote in <m93tqqF8pgcU15@mid.individual.net>:

    On 2025-05-20 19:43, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    Consider that, for instance, this laptop has an IPv6 address:

    cer@Isengard:~> ifconfig
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 192.168.1.16 netmask 255.255.0.0 broadcast 192.168.255.255
    inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link>
    ether 4c:cc:6a:61:50:a1 txqueuelen 1000 (Ethernet)
    ...

    This laptop has an IPv6 link local address.

    I know. That one is automatic.

    And also a given global address that I personally wrote.

    I'm wondering what the purpose of the global address is?

    If you don't have global IPv6 reachability, why have a global
    address (bogus or otherwise)?

    Because I wanted to try LAN connectivity, between computers, years ago.

    --
    Cheers,
    Carlos E.R.

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  • From Carlos E. R.@21:1/5 to Nuno Silva on Wed May 21 10:42:21 2025
    On 2025-05-21 10:13, Nuno Silva wrote:
    On 2025-05-21, Marc Haber wrote:

    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some >>>>> years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.

    The correct command is ip -6 route.

    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    Yet you keep doing the same about judging people. That's hypocrisy at
    work.


    ...

    I was planning not to mention this, given I don't have much to recall,
    but if you're going to insist on that aggressive approach, judging
    people, taking a chance at bullying if someone dares to use ifconfig,
    and at the same time asserting the problem doesn't exist, I don't think
    I can afford not to comment.

    Thanks.

    I could of course have very easily searched for the modern ipv6 routing
    command and not ran afoul of his taunts.

    I just don't remember commands that I do not use.


    --
    Cheers,
    Carlos E.R.

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  • From Carlos E. R.@21:1/5 to All on Wed May 21 10:47:52 2025
    On 2025-05-21 05:42, c186282 wrote:
    On 5/20/25 5:37 AM, The Natural Philosopher wrote:
    On 20/05/2025 08:59, Marc Haber wrote:
    Popping Mad <rainbow@colition.gov> wrote:
    On 5/17/25 2:01 PM, vallor wrote:
    IPv6 is the future.

    fuck ip6

    This is a raging example how pseudonymous people say things that would
    be unwise to say in a non-anonymous environment.

    IPv6 is a protocol. It is a good one. It doesn't hurt anybody. Why
    should it be "fucked"?

    I think that this kind of hate should go a different way.

    Well it is another apparent 'designed by comp scis to be as opaque as
    possible with a hundred bells and whistles that no one will ever use'

    As c186282 said. why not just prepend or append another '.000.'

      Hey, it'd WORK - kinda smoothly.

      Backwards compatibility kinda easy.

      Also, the NUMBERS are things people can UNDERSTAND,
      unlike all the long HEX crap in IPV6

      IPV4 = unexpectedly proved a bit inadequate

      IPV6 = horrible overkill 'solution'

      IPV5 ... my proposal ... maybe the best and
      most transparent. Good for the next 50 years
      fer-sure.

    And have our children go over this problem again?

    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to Nuno Silva on Wed May 21 13:16:59 2025
    Nuno Silva <nunojsilva@invalid.invalid> wrote:
    On 2025-05-21, Marc Haber wrote:
    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    Yet you keep doing the same about judging people. That's hypocrisy at
    work.

    I just expect people to have a basic education about a topic that they
    want do discuss in public. That is necessary to have a discussion on eye-level¹.

    There is zero evidence about IPv6 network speed being slower than IPv4
    on a feature-par network.

    Of course there are stupid ISPs who that send IPv6 on absurd detours.
    Those need to be put out of business.

    Can you provide evidence that such a delay will never happen without
    broken routes? Or is it up to the implementation that asks for the
    address?

    I dont understand the question.

    While I don't recall details, I think I've seen and read about this
    behaviour too. Only for one case with my computers do I remember it
    being a stale route or assignment. For those back in the past I don't
    recall much.

    We are talking about how a system with both IPv4 and IPv6 enabled
    behaves on an IPv4-only network. Such a system will not have IPv6
    routes going further than the automatically established link-local
    networks and thus any attempts to use IPv6 will immediately result in
    the network stack returning a "no route to host" error message.

    A well behaved application is then expected to try the next IP address
    it might know for the desired communications partner. This applies to
    both IPv4 and IPv6. Sadly I don't know at the moment whether this
    functionality is implemented in the network stack of whether the
    application is expected to implement the necessary logic.

    The suggested gai.conf change will, by the way, also only hit at this
    stage, just pulling IPv4 in front of IPv6. Most IPv6 averse people who
    are looking for reasons to disable it say that it slows down DNS, and
    even IF they're right, the gai.conf change doesnt affect this part of commnunication.

    When I am talking about gai.conf here, I actually mean the in-kernel
    address label table that is maintained by virtue of the ip addrlabel
    command. Most modern Linux distributions only have gai.conf as kind of
    a legacy interface that is not necessarily connected at all to the
    in-kernel table that the kernel actually uses. I don't know if and
    which distributions have code that reads gai.conf and uses the
    contents to initialize the in-kernel table at startup time, since my
    systems directly interface with ip addrlabel (often via
    systemd-networkd).

    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment
    about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    Greetings
    Marc

    ¹ please excuse me if that translation of the German "auf Augenhöhe"
    was bad or invalid.
    ² not in the RFC2119 sense
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Marc Haber on Wed May 21 14:00:55 2025
    On 2025-05-21 13:16, Marc Haber wrote:
    Nuno Silva <nunojsilva@invalid.invalid> wrote:
    On 2025-05-21, Marc Haber wrote:
    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    Yet you keep doing the same about judging people. That's hypocrisy at
    work.

    I just expect people to have a basic education about a topic that they
    want do discuss in public. That is necessary to have a discussion on eye-level¹.

    I expect people asking questions of other users to provide the commands
    they want the information from.

    Nobody claimed to have an education in the topic. We just commented on a symptom. You, who claim to be the expert, is who has to ask the proper questions.

    Don't be uppity.

    ...

    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment
    about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    It doesn't happen to me currently, so asking me to provide information
    is pointless. But it has happened to me in the past. And I know because
    the software complained of no route or something.

    --
    Cheers,
    Carlos E.R.

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  • From vallor@21:1/5 to mh+usenetspam1118@zugschl.us on Wed May 21 12:45:29 2025
    On Wed, 21 May 2025 08:07:02 +0200, Marc Haber
    <mh+usenetspam1118@zugschl.us> wrote in <100jqi7$4o27$1@news1.tnib.de>:

    vallor <vallor@cultnix.org> wrote:
    If you don't have global IPv6 reachability, why have a global
    address (bogus or otherwise)?

    So that you do not need to renumber when you eventually get connected.
    There are more than enough IPv6 addresses to do it this way, this is
    one of IPv6's major advantages.

    Greetings
    Marc

    A pox on you for aggressive snipping! ;P

    His address is:

    ] inet6 fc00::16 prefixlen 64 scopeid 0x0<global>

    Um...

    --
    -v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090 Ti
    OS: Linux 6.14.7 Release: Mint 22.1 Mem: 258G
    "I would jog, but the ice would fall out of my glass."

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  • From Carlos E. R.@21:1/5 to Marco Moock on Wed May 21 14:45:29 2025
    On 2025-05-21 14:30, Marco Moock wrote:
    On 21.05.2025 14:00 Carlos E. R. wrote:

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address
    in the list.

    This is a bug in the application. This also applies vice-versa if no
    IPv4 connectivity exists (already does by default in certain cellular networks) and the application tries that.

    It doesn't happen to me currently, so asking me to provide
    information is pointless. But it has happened to me in the past. And
    I know because the software complained of no route or something.

    Which is the expected result for that. If that happens again,
    investigate and file a bug report for the application.

    We investigated, and was told to adjust gai.conf.

    --
    Cheers,
    Carlos E.R.

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  • From Marco Moock@21:1/5 to All on Wed May 21 14:30:07 2025
    On 21.05.2025 14:00 Carlos E. R. wrote:

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address
    in the list.

    This is a bug in the application. This also applies vice-versa if no
    IPv4 connectivity exists (already does by default in certain cellular
    networks) and the application tries that.

    It doesn't happen to me currently, so asking me to provide
    information is pointless. But it has happened to me in the past. And
    I know because the software complained of no route or something.

    Which is the expected result for that. If that happens again,
    investigate and file a bug report for the application.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Wed May 21 16:53:29 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    We investigated, and was told to adjust gai.conf.

    Who ever gave you that advice most probably gave you a placebo, or
    that happened a decade ago.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Carlos E. R. on Wed May 21 16:52:50 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment
    about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    pcap/strace or it didn't happen.

    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marco Moock@21:1/5 to All on Wed May 21 17:16:10 2025
    On 21.05.2025 14:45 Uhr Carlos E. R. wrote:

    On 2025-05-21 14:30, Marco Moock wrote:
    On 21.05.2025 14:00 Carlos E. R. wrote:

    It just is a perceived fact. On some machines, if an application
    gets back from the system a list of addresses to try, and tries
    IPv6 first when there is no actual IPv6 internet connectivity,
    there is a small delay waiting for the request to fail, and then
    try the next address in the list.

    This is a bug in the application. This also applies vice-versa if no
    IPv4 connectivity exists (already does by default in certain
    cellular networks) and the application tries that.

    It doesn't happen to me currently, so asking me to provide
    information is pointless. But it has happened to me in the past.
    And I know because the software complained of no route or
    something.

    Which is the expected result for that. If that happens again,
    investigate and file a bug report for the application.

    We investigated, and was told to adjust gai.conf.

    Then there is a general problem - either on your system or in the
    application if it occurs only there.

    --
    kind regards
    Marco

    Send spam to 1747831529muell@stinkedores.dorfdsl.de

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  • From Marc Haber@21:1/5 to vallor on Wed May 21 17:19:59 2025
    vallor <vallor@cultnix.org> wrote:
    His address is:

    ] inet6 fc00::16 prefixlen 64 scopeid 0x0<global>

    I read that as a misconfiguration.

    I have never used ifconfig with IPv6 on Linux. I misread that as
    "fc00::/16" and discarded it as rubbish. That it actually means
    fc00::16/64 only occurred to me after you pointed me towards it.

    That being said, the address range fc00::/8 is currently not in use as
    par the RFCs. fc00::/7 is reserved for unique local addresses, but
    that is currently only defined for fd00::/8, as with bit 8 set to 1.
    We are seeing a non-RFC-conformant misconfiguration here.

    As with a normally routed address, having this configured should not
    hurt at all for out-of-prefix addresses (such as everything on the
    global internet) since the network should quickly generate a host
    unreachable message even if a default route is present on the system.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From The Natural Philosopher@21:1/5 to Marc Haber on Wed May 21 16:47:37 2025
    On 21/05/2025 15:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment
    about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    pcap/strace or it didn't happen.

    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.

    Sure. Its always *somebody elses* problem.

    --
    "And if the blind lead the blind, both shall fall into the ditch".

    Gospel of St. Mathew 15:14

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  • From Bobbie Sellers@21:1/5 to Marc Haber on Wed May 21 08:21:44 2025
    On 5/20/25 23:03, Marc Haber wrote:
    c186282 <c186282@nnada.net> wrote:
    IPV4 = unexpectedly proved a bit inadequate

    totally inadequate.

    IPV6 = horrible overkill 'solution'

    I violently disagree.

    It is IPv4 that needs overkill 'solutions' to be kept alive.

    IPV5 ... my proposal ... maybe the best and
    most transparent. Good for the next 50 years
    fer-sure.

    Horrible.

    These are numbers HUMANS can read, remember, understand.

    IP Adresses were never meant to be remembered or understood.

    Don't know WHERE the IPV6 stuff was coming from - TOO tech
    IMHO.

    It is a sane, nicely designed, simple protocol with a lot of
    flexibility that needs less worarounds that IPv4 does.


    IVP6 comes from having too many web sites to fit in IVP4.
    If you pay attention to the larger picture you might know that. That
    the protocol has not been properly instituted everywhere it should
    have been is not the fault of the designers but of people who learned
    IVP4 and think nothing better can come along.

    bliss

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  • From Carlos E. R.@21:1/5 to Marc Haber on Wed May 21 18:30:03 2025
    On 2025-05-21 16:53, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    We investigated, and was told to adjust gai.conf.

    Who ever gave you that advice most probably gave you a placebo, or
    that happened a decade ago.

    As I said, it was years ago, and it worked, so not a placebo.

    --
    Cheers,
    Carlos E.R.

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  • From Carlos E. R.@21:1/5 to Marco Moock on Wed May 21 18:31:21 2025
    On 2025-05-21 17:16, Marco Moock wrote:
    On 21.05.2025 14:45 Uhr Carlos E. R. wrote:

    On 2025-05-21 14:30, Marco Moock wrote:
    On 21.05.2025 14:00 Carlos E. R. wrote:

    It just is a perceived fact. On some machines, if an application
    gets back from the system a list of addresses to try, and tries
    IPv6 first when there is no actual IPv6 internet connectivity,
    there is a small delay waiting for the request to fail, and then
    try the next address in the list.

    This is a bug in the application. This also applies vice-versa if no
    IPv4 connectivity exists (already does by default in certain
    cellular networks) and the application tries that.

    It doesn't happen to me currently, so asking me to provide
    information is pointless. But it has happened to me in the past.
    And I know because the software complained of no route or
    something.

    Which is the expected result for that. If that happens again,
    investigate and file a bug report for the application.

    We investigated, and was told to adjust gai.conf.

    Then there is a general problem - either on your system or in the
    application if it occurs only there.

    Well, it happened to several people and with several apps.

    --
    Cheers,
    Carlos E.R.

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  • From Richard Kettlewell@21:1/5 to Marc Haber on Wed May 21 17:35:01 2025
    Marc Haber <mh+usenetspam1118@zugschl.us> writes:
    We are talking about how a system with both IPv4 and IPv6 enabled
    behaves on an IPv4-only network. Such a system will not have IPv6
    routes going further than the automatically established link-local
    networks and thus any attempts to use IPv6 will immediately result in
    the network stack returning a "no route to host" error message.

    A well behaved application is then expected to try the next IP address
    it might know for the desired communications partner. This applies to
    both IPv4 and IPv6. Sadly I don't know at the moment whether this functionality is implemented in the network stack of whether the
    application is expected to implement the necessary logic.

    Destination addresses are selected in userland. getaddrinfo() is the
    standard implementation, returning an ordered list of destination
    addresses corresponding to the requested name. The application is
    expected to work through them in order.

    Source addresses are normally selected by the kernel (though an
    application can do this if it so chooses). But source selection is not
    very relevant to choosing between protocols.

    The suggested gai.conf change will, by the way, also only hit at this
    stage, just pulling IPv4 in front of IPv6. Most IPv6 averse people who
    are looking for reasons to disable it say that it slows down DNS, and
    even IF they're right, the gai.conf change doesnt affect this part of commnunication.

    When I am talking about gai.conf here, I actually mean the in-kernel
    address label table that is maintained by virtue of the ip addrlabel
    command. Most modern Linux distributions only have gai.conf as kind of
    a legacy interface that is not necessarily connected at all to the
    in-kernel table that the kernel actually uses. I don't know if and
    which distributions have code that reads gai.conf and uses the
    contents to initialize the in-kernel table at startup time, since my
    systems directly interface with ip addrlabel (often via
    systemd-networkd).

    AFAICS for destination address selection getaddrinfo() follows gai.conf
    (and ignores ip-addrlabel). So I think you have conflated source and destination address selection here.

    --
    https://www.greenend.org.uk/rjk/

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  • From Carlos E. R.@21:1/5 to Marc Haber on Wed May 21 19:22:18 2025
    On 2025-05-21 08:05, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some >>>> years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.

    The correct command is ip -6 route.

    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    I don't have IPv6, I don't have to remember IPv6 related commands.

    cer@Laicolasse:~> ip -6 route
    fe80::/64 dev wlan0 proto kernel metric 1024 pref medium
    cer@Laicolasse:~>

    And you would not like me using ancient commands.


    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    It is the network speed that matters, which is much slower.

    There is zero evidence about IPv6 network speed being slower than IPv4
    on a feature-par network.

    That is not what happened, and not what I said.


    Of course there are stupid ISPs who that send IPv6 on absurd detours.
    Those need to be put out of business.



    --
    Cheers,
    Carlos E.R.

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  • From Carlos E. R.@21:1/5 to Marc Haber on Wed May 21 19:16:08 2025
    On 2025-05-21 16:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment
    about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    pcap/strace or it didn't happen.

    Asking for a trace _now_ is ridiculous. It certainly did happen, and to
    to several people. Years ago.


    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.



    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to The Natural Philosopher on Wed May 21 21:14:30 2025
    The Natural Philosopher <tnp@invalid.invalid> wrote:
    On 21/05/2025 15:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should² also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment >>>> about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    pcap/strace or it didn't happen.

    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an
    IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.

    Sure. Its always *somebody elses* problem.

    YOUR network is YOUR problem.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Bobbie Sellers on Wed May 21 21:13:27 2025
    Bobbie Sellers <bliss-sf4ever@dslextreme.com> wrote:
    IVP6 comes from having too many web sites to fit in IVP4.

    No. THAT issue has been solved with name-based virtual hosting and
    SNI. Which is too bad since it decreases the pressure to get rid of
    v4.

    If you pay attention to the larger picture you might know that. That
    the protocol has not been properly instituted everywhere it should
    have been is not the fault of the designers but of people who learned
    IVP4 and think nothing better can come along.

    And it is the fault of the persons who are SO acquainted with the
    crutches that v4 needs to limp ahead that they actually think that a
    protocol that doesn't need THESE¹ crutches is crippled.

    Greetings
    Marc

    ¹ I am not saying that IPv6 is the best protocol ever but it's the
    best we've got at the moment.
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Richard Kettlewell on Wed May 21 21:18:15 2025
    Richard Kettlewell <invalid@invalid.invalid> wrote:
    Marc Haber <mh+usenetspam1118@zugschl.us> writes:
    We are talking about how a system with both IPv4 and IPv6 enabled
    behaves on an IPv4-only network. Such a system will not have IPv6
    routes going further than the automatically established link-local
    networks and thus any attempts to use IPv6 will immediately result in
    the network stack returning a "no route to host" error message.

    A well behaved application is then expected to try the next IP address
    it might know for the desired communications partner. This applies to
    both IPv4 and IPv6. Sadly I don't know at the moment whether this
    functionality is implemented in the network stack of whether the
    application is expected to implement the necessary logic.

    Destination addresses are selected in userland. getaddrinfo() is the
    standard implementation, returning an ordered list of destination
    addresses corresponding to the requested name. The application is
    expected to work through them in order.

    So it is actually a well behaved application that should do that.
    Thanks for the correction. I don't develop enough software to know
    that (and I do sincerely hope that there is a python module that
    solves this issue for me should I ever need it).

    When I am talking about gai.conf here, I actually mean the in-kernel
    address label table that is maintained by virtue of the ip addrlabel
    command. Most modern Linux distributions only have gai.conf as kind of
    a legacy interface that is not necessarily connected at all to the
    in-kernel table that the kernel actually uses. I don't know if and
    which distributions have code that reads gai.conf and uses the
    contents to initialize the in-kernel table at startup time, since my
    systems directly interface with ip addrlabel (often via
    systemd-networkd).

    AFAICS for destination address selection getaddrinfo() follows gai.conf
    (and ignores ip-addrlabel). So I think you have conflated source and >destination address selection here.

    Also that might be correct. I usually fight with source address
    selection since I have a dynamic and a static prefix in my home
    network and wish that certain programs (ssh, for example) use the
    static prefix while others use the dynamic one (for privacy and
    performance reasons¹). I happen to be happy with the default for the destination address and wish IPv6 to be preferred.

    Greetings
    Marc

    ¹ the static prefix goes through a tunnel and therefore is some 10 ms
    slower in latency than the dynamic prefix
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Richard Kettlewell@21:1/5 to Marc Haber on Wed May 21 21:10:34 2025
    Marc Haber <mh+usenetspam1118@zugschl.us> writes:
    Richard Kettlewell <invalid@invalid.invalid> wrote:

    Destination addresses are selected in userland. getaddrinfo() is the
    standard implementation, returning an ordered list of destination
    addresses corresponding to the requested name. The application is
    expected to work through them in order.

    So it is actually a well behaved application that should do that.
    Thanks for the correction. I don't develop enough software to know
    that (and I do sincerely hope that there is a python module that
    solves this issue for me should I ever need it).

    https://docs.python.org/3/library/socket.html#socket.create_connection

    --
    https://www.greenend.org.uk/rjk/

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  • From Marc Haber@21:1/5 to Carlos E. R. on Wed May 21 21:21:31 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 08:05, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 23:14, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-20 19:43, Marc Haber wrote:
    What does the IPv6 routing table of the system in question say?

    I don't have a problem with the laptop currently. The problem was some >>>>> years ago, on several computers.

    cer@Isengard:~> ip route
    default via 192.168.1.1 dev eth0
    192.168.0.0/16 dev eth0 proto kernel scope link src 192.168.1.16
    cer@Isengard:~>

    That is not the IPv6 routing table.

    That is all there is.

    The correct command is ip -6 route.

    You don't have the most basic knowledge and still you feel yourself
    qualified to judge about the protocol. That's Dunning-Kruger at work.

    I don't have IPv6, I don't have to remember IPv6 related commands.

    cer@Laicolasse:~> ip -6 route
    fe80::/64 dev wlan0 proto kernel metric 1024 pref medium
    cer@Laicolasse:~>

    So there is, as expected, only a route for the link local network,
    making any connection attempt to a non-local IPv6 address error out immediately, and a well-behaved application will immediately retry the
    next address for the target host. That costs time, but like half a
    millisecond or so. You will only notice that in high performance
    networking. Your shell prompt wastes more CPU cycles every time it
    gets displayed.

    On a slow machine, about a millisecond, yes. That matters in high
    performance computing, where professionals do the administration. It
    does absolutely not matter on a personal workstation that spends 99 %
    of its CPU cycles waiting for keystrokes anyway.

    It is the network speed that matters, which is much slower.

    There is zero evidence about IPv6 network speed being slower than IPv4
    on a feature-par network.

    That is not what happened, and not what I said.

    What did you say?

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Nuno Silva@21:1/5 to Marc Haber on Wed May 21 23:09:07 2025
    On 2025-05-21, Marc Haber wrote:

    Bobbie Sellers <bliss-sf4ever@dslextreme.com> wrote:
    IVP6 comes from having too many web sites to fit in IVP4.

    No. THAT issue has been solved with name-based virtual hosting and
    SNI. Which is too bad since it decreases the pressure to get rid of
    v4.

    Here the IPv4 problem is not websites, but hosts/nodes/devices. IPv4
    only survives because of NAT.

    IPv6 seems to make it quite easy to get non-local addresses. At least
    when properly deployed.

    If you pay attention to the larger picture you might know that. That
    the protocol has not been properly instituted everywhere it should
    have been is not the fault of the designers but of people who learned
    IVP4 and think nothing better can come along.

    And it is the fault of the persons who are SO acquainted with the
    crutches that v4 needs to limp ahead that they actually think that a
    protocol that doesn't need THESE¹ crutches is crippled.

    Greetings
    Marc

    ¹ I am not saying that IPv6 is the best protocol ever but it's the
    best we've got at the moment.

    What would be a good description/introduction/... in textual form of
    IPv6 to introduce people to the way it's intended to be used? Stuff like mentioning address scopes, RAs, DHCP, multicast...

    --
    Nuno Silva

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  • From Computer Nerd Kev@21:1/5 to Carlos E. R. on Thu May 22 09:10:37 2025
    Carlos E. R. <robin_listas@es.invalid> wrote:
    On 2025-05-21 16:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should? also refrain from asking for
    AAAA records if the local system doesn't have IPv6, but I don't know
    whether this special-case handling is implemented at all. And I'm too
    lazy to look that up.

    But all this needs to be taken into account before someone can comment >>>> about speed of one IP protocol compared to the other on a level that
    is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in
    the list.

    pcap/strace or it didn't happen.

    Asking for a trace _now_ is ridiculous. It certainly did happen, and to
    to several people. Years ago.

    Looks like it was only last year when I encountered package list
    downloads failing in Aptitude on an IPv4-only VPS due to it trying
    to connect on IPv6.

    Disabling IPv6 on there made perfect sense - it's intended to be a
    stable system, not a testing ground for applications. I knew IPv6
    wasn't available, and I'd seen such behaviour before in an
    unimportant program on another system, so really it's my fault for
    leaving the door open to such bugs by pointlessly leaving the
    kernel's IPv6 support enabled.

    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an
    IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.

    But if that network error has been made, you'll avoid trouble if
    IPv6 is disabled. So if you know IPv6 isn't available anyway,
    there's a clear advantage to disabling it in the kernel and dodging
    these potential sources of failure even if they "should not
    happen".

    --
    __ __
    #_ < |\| |< _#

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  • From Marc Haber@21:1/5 to Nuno Silva on Thu May 22 09:25:18 2025
    Nuno Silva <nunojsilva@invalid.invalid> wrote:
    On 2025-05-21, Marc Haber wrote:
    Bobbie Sellers <bliss-sf4ever@dslextreme.com> wrote:
    IVP6 comes from having too many web sites to fit in IVP4.

    No. THAT issue has been solved with name-based virtual hosting and
    SNI. Which is too bad since it decreases the pressure to get rid of
    v4.

    Here the IPv4 problem is not websites, but hosts/nodes/devices. IPv4
    only survives because of NAT.

    Yes.

    IPv6 seems to make it quite easy to get non-local addresses. At least
    when properly deployed.

    YES!

    ¹ I am not saying that IPv6 is the best protocol ever but it's the
    best we've got at the moment.

    What would be a good description/introduction/... in textual form of
    IPv6 to introduce people to the way it's intended to be used? Stuff like >mentioning address scopes, RAs, DHCP, multicast...

    That is a very hard question. I'd recommend a more practical approach,
    but that would need to begin with an ISP who has enabled and deployed
    IPv6 in the proper form, so that one gets quick gratification from
    just using it.

    Sadly, I am not a very good teacher, and IPv6 is one of the topics
    where knowledge is actually a handycap: The better you know IPv4, the
    harder it is to begin with IPv6 because you'll find yourself looking
    for features that you NEED for IPv4 and where it is not immediately
    obvious that you don't need that particular functionality for IPv6.

    Having virtualization available would make things easier since you
    could build your own lab with a router and a handful of clients. But
    that's its own topic to start with.

    The most important thing to take away is: Just don't disable it. You
    might find yourself using IPv6 without even noticing.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marc Haber@21:1/5 to Computer Nerd Kev on Thu May 22 09:27:16 2025
    not@telling.you.invalid (Computer Nerd Kev) wrote:
    Carlos E. R. <robin_listas@es.invalid> wrote:
    On 2025-05-21 16:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should? also refrain from asking for >>>>> AAAA records if the local system doesn't have IPv6, but I don't know >>>>> whether this special-case handling is implemented at all. And I'm too >>>>> lazy to look that up.

    But all this needs to be taken into account before someone can comment >>>>> about speed of one IP protocol compared to the other on a level that >>>>> is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in >>>> the list.

    pcap/strace or it didn't happen.

    Asking for a trace _now_ is ridiculous. It certainly did happen, and to
    to several people. Years ago.

    Looks like it was only last year when I encountered package list
    downloads failing in Aptitude on an IPv4-only VPS due to it trying
    to connect on IPv6.

    It would have been a better thing to debug this. An IPv4-only VPS
    should not try to connect on IPv6.

    Disabling IPv6 on there made perfect sense - it's intended to be a
    stable system, not a testing ground for applications. I knew IPv6
    wasn't available, and I'd seen such behaviour before in an
    unimportant program on another system, so really it's my fault for
    leaving the door open to such bugs by pointlessly leaving the
    kernel's IPv6 support enabled.

    I would still advise against doing so. Your system has support for
    dozens of protocols that you don't use and you don't disable.

    Please note that _broken_ IPv6, for example when the router announces
    an IPv6 but the network doesn't return a host unreachable ICMPv6
    message from the place where connectivity is missing, will cause an
    IPv6-enabled application to wait for the time out. But that is an
    error in the _network_ setup, and should not happen in the case where
    the end system (the one with the application running) has v6 enabled
    on a non-v6-enabled network.

    But if that network error has been made, you'll avoid trouble if
    IPv6 is disabled. So if you know IPv6 isn't available anyway,
    there's a clear advantage to disabling it in the kernel and dodging
    these potential sources of failure even if they "should not
    happen".

    I recommend fixing bugs at their root not at a random symptom.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Carlos E. R.@21:1/5 to Computer Nerd Kev on Thu May 22 18:16:06 2025
    On 2025-05-22 01:10, Computer Nerd Kev wrote:
    Carlos E. R. <robin_listas@es.invalid> wrote:
    On 2025-05-21 16:52, Marc Haber wrote:
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-21 13:16, Marc Haber wrote:
    I think that the local resolver should? also refrain from asking for >>>>> AAAA records if the local system doesn't have IPv6, but I don't know >>>>> whether this special-case handling is implemented at all. And I'm too >>>>> lazy to look that up.

    But all this needs to be taken into account before someone can comment >>>>> about speed of one IP protocol compared to the other on a level that >>>>> is beyond passing myths.

    It just is a perceived fact. On some machines, if an application gets
    back from the system a list of addresses to try, and tries IPv6 first
    when there is no actual IPv6 internet connectivity, there is a small
    delay waiting for the request to fail, and then try the next address in >>>> the list.

    pcap/strace or it didn't happen.

    Asking for a trace _now_ is ridiculous. It certainly did happen, and to
    to several people. Years ago.

    Looks like it was only last year when I encountered package list
    downloads failing in Aptitude on an IPv4-only VPS due to it trying
    to connect on IPv6.

    Now that you say it, there were several people on openSUSE complaining
    of a similar problem with updates. So zypper and YaST. Years ago, not
    recently.


    --
    Cheers,
    Carlos E.R.

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  • From Marc Haber@21:1/5 to Carlos E. R. on Thu May 22 20:51:06 2025
    "Carlos E. R." <robin_listas@es.invalid> wrote:
    On 2025-05-22 01:10, Computer Nerd Kev wrote:
    Looks like it was only last year when I encountered package list
    downloads failing in Aptitude on an IPv4-only VPS due to it trying
    to connect on IPv6.

    Now that you say it, there were several people on openSUSE complaining
    of a similar problem with updates. So zypper and YaST. Years ago, not >recently.

    It used to be a common misconfiguration in hosting to add an AAAA
    Record without telling the web swerver to listen on v6. Hosters have
    learned since then to configure and to monitor.

    At home, I usually don't notice when v4 is broken. My wife does,
    because she regularly plays an IPv4 only browser game.

    Greetings
    Marc
    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Lawrence D'Oliveiro@21:1/5 to The Natural Philosopher on Wed Jun 25 06:58:19 2025
    On Tue, 20 May 2025 17:01:50 +0100, The Natural Philosopher wrote:

    On 20/05/2025 16:47, Marc Haber wrote:

    What have you done for the Internet?

    I rolled it out across the UK

    Built the first UK web server, and the biggest UK mail server.

    Installed Internet in the Channel Islands

    I didnt have time for any RFCs.

    So you figured out how to set up software, but there was no way you could
    have written it.

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  • From c186282@21:1/5 to Lawrence D'Oliveiro on Wed Jun 25 03:13:10 2025
    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

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  • From Lawrence D'Oliveiro@21:1/5 to The Natural Philosopher on Wed Jun 25 06:56:32 2025
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done. The address field in the IPv4 packet is a fixed length.
    There is no way to get existing IPv4-specific software to recognize a
    longer address. That’s why we need a whole new protocol.

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  • From Marco Moock@21:1/5 to All on Wed Jun 25 10:05:09 2025
    On 25.06.2025 03:13 c186282 c186282 wrote:

    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

    Simply bullshit. The address field is exactly 32 bits long and that
    means it can't be simply extended. Devices and software expect it to be
    exactly that long and will read and process 32 bits. Modifying that
    means you need to make EVERY device/software aware of that change at
    the same time, so they can communicate with the longer addresses.

    More PITA than creating a separate protocol that can run alongside the
    old one for testing and transition.

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  • From c186282@21:1/5 to Marco Moock on Wed Jun 25 04:20:23 2025
    On 6/25/25 4:05 AM, Marco Moock wrote:
    On 25.06.2025 03:13 c186282 c186282 wrote:

    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

    Simply bullshit.

    What ... can't think of a way to program that ?
    Shame !

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  • From Lawrence D'Oliveiro@21:1/5 to Carlos E. R. on Wed Jun 25 08:42:53 2025
    On Mon, 19 May 2025 12:27:35 +0200, Carlos E. R. wrote:

    It is my ISP who has a problem. They haven't said which, but my educated guess is that many of the routers they installed are faulty. For
    example, mine does not protect the LAN with a firewall on IPv6, all
    machines are directly exposed.

    Why are you using an ISP-supplied router? I have always bought my own.

    Even when I was on ADSL, I found a USB device (Conexant AccessRunner) for
    which you could get firmware that would run it as just a modem, not a
    router, so I could connect it as an extra network interface on a Linux box
    and have that handle the routing. I just had to set it up as a PPP-over-
    ATM connection.

    Nowadays, with fibre, all the on-premise connections are Ethernet anyway,
    which makes things even easier.

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  • From Lawrence D'Oliveiro@21:1/5 to Marco Moock on Wed Jun 25 08:45:42 2025
    On Wed, 25 Jun 2025 10:05:09 +0200, Marco Moock wrote:

    On 25.06.2025 03:13 c186282 c186282 wrote:

    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:

    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

    Simply bullshit. The address field is exactly 32 bits long and that
    means it can't be simply extended. Devices and software expect it to be exactly that long and will read and process 32 bits.

    I get the feeling someone doesn’t appreciate that point, and thinks that addresses in IP packets are stored as decimal strings or something ...

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  • From Lawrence D'Oliveiro@21:1/5 to Carlos E. R. on Wed Jun 25 08:55:40 2025
    On Tue, 20 May 2025 18:34:51 +0200, Carlos E. R. wrote:

    Consider that, for instance, this laptop has an IPv6 address:

    inet6 fc00::16 prefixlen 64 scopeid 0x0<global>
    inet6 fe80::4ecc:6aff:fe61:50a1 prefixlen 64 scopeid 0x20<link> ...

    So applications thought that IPv6 was available.

    You don’t have to worry about those. The one beginning with “fc” is “network-local” (analogous to private IPv4 ranges like 10.0.0.0/8, 196.168.0.0/16 etc), and the one beginning with “fe8” is “link-local” (only for use on the directly-attached layer 2). Neither is routable
    outside your LAN, so they can’t, won’t, be used to access any Internet

    reference: <https://en.wikipedia.org/wiki/IPv6_address>

    (Yes, there are quite a few more different kinds of addresses than
    with IPv4 ...)

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  • From Carlos E.R.@21:1/5 to Lawrence D'Oliveiro on Wed Jun 25 12:04:32 2025
    On 2025-06-25 10:42, Lawrence D'Oliveiro wrote:
    On Mon, 19 May 2025 12:27:35 +0200, Carlos E. R. wrote:

    It is my ISP who has a problem. They haven't said which, but my educated
    guess is that many of the routers they installed are faulty. For
    example, mine does not protect the LAN with a firewall on IPv6, all
    machines are directly exposed.

    Why are you using an ISP-supplied router? I have always bought my own.

    Because the required (by the ISP) configuration to support
    TV-over-fibre, telephone-over-fibre and internet is not published.




    Even when I was on ADSL, I found a USB device (Conexant AccessRunner) for which you could get firmware that would run it as just a modem, not a
    router, so I could connect it as an extra network interface on a Linux box and have that handle the routing. I just had to set it up as a PPP-over-
    ATM connection.

    Nowadays, with fibre, all the on-premise connections are Ethernet anyway, which makes things even easier.


    On ADSL times, the vendors sold routers that supported the ADSL
    configuration from my ISP right out of the box. You just had to replace
    the router and click "configure it for Telefónica".



    --
    Cheers, Carlos.

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  • From Marc Haber@21:1/5 to c186282@nnada.net on Wed Jun 25 11:27:28 2025
    c186282 <c186282@nnada.net> wrote:
    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

    You very obviously neither know about network protocols nor about
    operating systems nor about software development.

    If I were you, I'd carefully hide my name. It would be damaging to
    your reputation.

    --
    ---------------------------------------------------------------------------- Marc Haber | " Questions are the | Mailadresse im Header Rhein-Neckar, DE | Beginning of Wisdom " |
    Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 6224 1600402

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  • From Marco Moock@21:1/5 to All on Wed Jun 25 13:54:48 2025
    On 25.06.2025 04:20 c186282 c186282 wrote:

    On 6/25/25 4:05 AM, Marco Moock wrote:
    On 25.06.2025 03:13 c186282 c186282 wrote:

    On 6/25/25 2:56 AM, Lawrence D'Oliveiro wrote:
    On Tue, 20 May 2025 10:37:46 +0100, The Natural Philosopher wrote:

    ... why not just prepend or append another '.000.'

    Can’t be done.

    Can EASILY be done.

    Simply bullshit.

    What ... can't think of a way to program that ?
    Shame !

    This modified version needs to be applied to every machine at the same
    time to make it work, and that is impossible.

    It will create a separate protocol that might have the only difference
    in the address length, but sich a protocol needs support in devices and
    that takes a while, while IPv6 is already available in most devices.

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  • From Nuno Silva@21:1/5 to Carlos E.R. on Wed Jun 25 16:24:48 2025
    On 2025-06-25, Carlos E.R. wrote:

    On 2025-06-25 10:42, Lawrence D'Oliveiro wrote:
    On Mon, 19 May 2025 12:27:35 +0200, Carlos E. R. wrote:

    It is my ISP who has a problem. They haven't said which, but my educated >>> guess is that many of the routers they installed are faulty. For
    example, mine does not protect the LAN with a firewall on IPv6, all
    machines are directly exposed.

    Why are you using an ISP-supplied router? I have always bought my own.

    Because the required (by the ISP) configuration to support
    TV-over-fibre, telephone-over-fibre and internet is not published.

    So what you have is an ONT for GPON?

    I'd guess TV wouldn't be a configuration, but just EDFA? I don't really
    know details of how that is implemented, but I'd think adding any sort
    of configuration to it would complicate it beyond just amplifying the
    signal?

    Even when I was on ADSL, I found a USB device (Conexant AccessRunner) for
    which you could get firmware that would run it as just a modem, not a
    router, so I could connect it as an extra network interface on a Linux box >> and have that handle the routing. I just had to set it up as a PPP-over-
    ATM connection.

    Heh, I ended up going the other direction when I had ADSL, I tried to
    obtain a third-party modem-router so that I'd not have to deal with an
    USB modem device (what the ISP offered) connected to a computer as a peripheral, but rather just plug 8P8C to it and have it handle the WAN connection itself.


    --
    Nuno Silva

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  • From Carlos E.R.@21:1/5 to Nuno Silva on Wed Jun 25 19:35:03 2025
    On 2025-06-25 17:24, Nuno Silva wrote:
    On 2025-06-25, Carlos E.R. wrote:

    On 2025-06-25 10:42, Lawrence D'Oliveiro wrote:
    On Mon, 19 May 2025 12:27:35 +0200, Carlos E. R. wrote:

    It is my ISP who has a problem. They haven't said which, but my educated >>>> guess is that many of the routers they installed are faulty. For
    example, mine does not protect the LAN with a firewall on IPv6, all
    machines are directly exposed.

    Why are you using an ISP-supplied router? I have always bought my own.

    Because the required (by the ISP) configuration to support
    TV-over-fibre, telephone-over-fibre and internet is not published.

    So what you have is an ONT for GPON?

    No, that is inside the router. It contains the ONT equivalent, the
    router, the switch, and the access point for wifi. Also one or two RJ11 sockets.


    I'd guess TV wouldn't be a configuration, but just EDFA? I don't really
    know details of how that is implemented, but I'd think adding any sort
    of configuration to it would complicate it beyond just amplifying the
    signal?

    No, it is some sort of VPN or VLAN. Also involves IGMP.


    Even when I was on ADSL, I found a USB device (Conexant AccessRunner) for >>> which you could get firmware that would run it as just a modem, not a
    router, so I could connect it as an extra network interface on a Linux box >>> and have that handle the routing. I just had to set it up as a PPP-over- >>> ATM connection.

    Heh, I ended up going the other direction when I had ADSL, I tried to
    obtain a third-party modem-router so that I'd not have to deal with an
    USB modem device (what the ISP offered) connected to a computer as a peripheral, but rather just plug 8P8C to it and have it handle the WAN connection itself.

    A proper router allowed to connect several computers. I think it came
    with WiFi too, I'm not sure.

    --
    Cheers, Carlos.

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