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Groups > linux.debian.user > #191438

Re: stretch and DNS name resolution service for other devices on a LAN

From David Wright <deblis@lionunicorn.co.uk>
Newsgroups linux.debian.user
Subject Re: stretch and DNS name resolution service for other devices on a LAN
Date 2018-01-23 18:10 +0100
Message-ID <vbaf7-50L-19@gated-at.bofh.it> (permalink)
References (5 earlier) <vb33Y-kB-7@gated-at.bofh.it> <vb4Mp-1xi-1@gated-at.bofh.it> <vb77z-2Vr-5@gated-at.bofh.it> <vb83D-3wR-1@gated-at.bofh.it> <vb9j4-4sn-15@gated-at.bofh.it>
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On Tue 23 Jan 2018 at 16:06:01 (-0000), Andy Hawkins wrote:
> Hi,
> 
> In article <20180123144327.GA6815@alum>,
>            David Wright<deblis@lionunicorn.co.uk> wrote:
> > This would all be a step in the wrong direction here. Point (2) was
> > that using IPv6 over CAT5 avoids swamping the router. (Of course,
> > that's already been snipped out of the thread.) If the DHCP server
> > is down, then the router is down, and there are no links to anywhere
> > except the CAT5 cable I've just connected.
> >
> > So why would I worry about whether the IPv4 had reconfigured itself
> > when I've got a perfectly good dedicated IPv6 link between the two
> > computers? And why should I be worrying about DHCP failures?—the
> > only time my router is dead is during power cuts.
> 
> You were giving your reasoning for using IPv6 as being able to handle direct
> cable connections between devices.
> 
> I was simply explaining that you don't need IPv6 to do this, as IPv4 will
> probably fall back to 'link local' addresses if they receive no response
> from a DHCP server (which they won't, as all they're connected to is some
> other PC). 

You still don't quite understand what I'm doing, so here's a diagram
(needs monospace font):

[My Laptop] --- wireless connection IPv4 --- [Router] --- Internet Modem
     |                                         / |
     | CAT5 cable IPv6                        /  |
     |                                       /   | wireless/wired
[My Desktop] --- wireless connection IPv4 __/    | connections
                                                 | IPv4
                                                 |
                                                [TVs]

> Both devices will allocate themselves an address in the 'link local' range,
> and these addresses can then be used for communicating between the devices.

… but meanwhile *I* can carry on using them both on the Internet
while transfers are taking place, and the TVs are unaffected by
any excessive traffic through the router.

In the case where a desktop is wired to the router, then just that
PC would lose its connectivity to all other machines (except
[My Laptop] of course) during a CAT5 connection (assuming it had
just the usual single ethernet port).

Cheers,
David.

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Thread

stretch and DNS name resolution service for other devices on a LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-18 22:40 +0100
  Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-18 22:50 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-19 06:20 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-19 21:10 +0100
  Re: stretch and DNS name resolution service for other devices on a  LAN Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-18 22:50 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-19 06:20 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 12:50 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN john doe <johndoe65534@mail.com> - 2018-01-19 13:10 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 13:30 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 15:10 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 15:30 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-19 14:50 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 15:10 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 15:20 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Rob van der Putten <rob@sput.nl> - 2018-01-19 16:20 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 17:40 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-19 20:40 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-19 16:20 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-22 18:30 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-22 23:30 +0100
              Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-23 10:30 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Curt <curty@free.fr> - 2018-01-23 12:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Joe <joe@jretrading.com> - 2018-01-23 14:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-23 15:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-23 17:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-23 18:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-23 21:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-22 23:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-24 10:00 +0100
                Re: stretch and DNS name resolution service for other devices on a   LAN Curt <curty@free.fr> - 2018-02-24 11:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-25 18:40 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-27 21:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-28 18:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-28 19:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-28 21:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-03-03 00:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-03-04 20:30 +0100

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