Groups > linux.debian.user > #209982

Re: IPv4 v IPv6

From	Gene Heskett <gheskett@shentel.net>
Newsgroups	linux.debian.user
Subject	Re: IPv4 v IPv6
Date	2019-06-17 16:40 +0200
Message-ID	<ya0XD-FB-3@gated-at.bofh.it> (permalink)
References	<y9VOi-6bc-11@gated-at.bofh.it> <y9WKm-6JE-9@gated-at.bofh.it>
Organization	none,nada,zip

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On Monday 17 June 2019 05:59:52 am Jonathan Dowland wrote:

> On Mon, Jun 17, 2019 at 10:05:11AM +0100, mick crane wrote:
> >Without knowing anything about it I'm wondering if I should request
> > an IPv6 range from my ISP to use locally.
>
> You don't need a global IPv6 address allocation in order to have local
> IPv6 addresses. Much like 127.0.0.0/8 (etc.) for IPv4 there are
> reserved ranges.
>
> If you want to have globally-accessible IPv6 addresses for machine(s)
> in your home, then you would need to request a range from your ISP (if
> they aren't already assigning you one). But I would start with
> learning a bit more about it first, and experimenting in the local
> range if that helps.
>
> >A network card have IPv4 and IPv6 addresses that are different, not
> >the same address in different notation ?
>
> That's right.
>
> >Then with firewalling do you need to specify both IPv4 and IPv6
> > ranges ?
>
> Yes, generally, anywhere you may have specified an IPv4 address or
> range you would need to rethink or add IPv6 equivalents.

But that opens yet another container of worms. If I arbitrarily assign 
ipv6 local addresses, and later, ipv6 shows up at my side of the router, 
what if I have an address clash with someone on a satellite circuit in 
Ulan Bator.  How is that resolved, by unroutable address blocks such as 
192.168.xx.xx is now?

What I've read so far has not addressed this serious security concern. Or 
even mentioned it.  If in the future all addressing is by dhcpd6, how do 
the other machines on my local net, advertise their presence to the 
other machines on my local net. So I can still ssh -Y vna.coyote.den for 
instance, if I can ever make ssh work to a win-10-home edition box.  
Thats a rarely used hookup at best. Presently the hosts file duplicated 
on all machines fill's this requirement.

These are the questions I'll need to address if and when ipv6 shows up on 
my side of the router.  And the wiki pages I've read, haven't discussed 
it.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

Thread

IPv4 v IPv6 mick crane <mick.crane@gmail.com> - 2019-06-17 11:10 +0200
  Re: IPv4 v IPv6 <tomas@tuxteam.de> - 2019-06-17 11:20 +0200
    Re: IPv4 v IPv6 Aidan Gauland <aidalgol@fastmail.net> - 2019-06-17 12:30 +0200
      Re: IPv4 v IPv6 Rob van der Putten <rob@sput.nl> - 2019-06-18 09:30 +0200
  Re: IPv4 v IPv6 Jonathan Dowland <jmtd@debian.org> - 2019-06-17 12:10 +0200
    Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-17 16:40 +0200
      Re: IPv4 v IPv6 Dan Ritter <dsr@randomstring.org> - 2019-06-17 17:00 +0200
        Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-17 18:30 +0200
        Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-17 19:00 +0200
          Re: IPv4 v IPv6 Greg Wooledge <wooledg@eeg.ccf.org> - 2019-06-17 19:10 +0200
            Re: SOLVED was IPv4 v IPv6 discussion that went off the rails. Gene Heskett <gheskett@shentel.net> - 2019-06-18 02:10 +0200
          Re: IPv4 v IPv6 Dan Ritter <dsr@randomstring.org> - 2019-06-17 19:10 +0200
            Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-17 19:40 +0200
              Re: IPv4 v IPv6 Dan Ritter <dsr@randomstring.org> - 2019-06-17 20:00 +0200
            Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-17 20:00 +0200
            Re: IPv4 v IPv6 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-18 14:50 +0200
              Re: IPv4 v IPv6 Greg Wooledge <wooledg@eeg.ccf.org> - 2019-06-18 14:50 +0200
                Re: IPv4 v IPv6 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-18 15:10 +0200
          Re: IPv4 v IPv6 Dennis Wicks <wix@mgssub.com> - 2019-06-27 22:40 +0200
            Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-27 23:30 +0200
        Re: IPv4 v IPv6 John Hasler <jhasler@newsguy.com> - 2019-06-17 20:30 +0200
          Re: IPv4 v IPv6 Dan Ritter <dsr@randomstring.org> - 2019-06-17 22:10 +0200
            Re: IPv4 v IPv6 Robin Hammond <rdhdroid@gmail.com> - 2019-06-17 22:20 +0200
              Re: IPv4 v IPv6 Andy Smith <andy@strugglers.net> - 2019-06-18 00:50 +0200
              Re: IPv4 v IPv6 John Hasler <jhasler@newsguy.com> - 2019-06-18 04:10 +0200
          Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-18 02:20 +0200
      Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-17 17:40 +0200
        Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-18 12:00 +0200
          Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-18 12:40 +0200
            Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-18 13:50 +0200
              Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-18 16:20 +0200
                Re: IPv4 v IPv6 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-18 16:50 +0200
                Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-18 18:20 +0200
                Re: IPv4 v IPv6 Linux Dave <mckisicd@gmail.com> - 2019-06-20 20:40 +0200
                Re: IPv4 v IPv6 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-20 20:40 +0200
                Re: IPv4 v IPv6 Erwan David <erwan@rail.eu.org> - 2019-06-20 20:50 +0200
                Re: IPv4 v IPv6 Nicholas Geovanis <nickgeovanis@gmail.com> - 2019-06-20 21:00 +0200
                Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-20 21:10 +0200
                Re: IPv4 v IPv6 Nicholas Geovanis <nickgeovanis@gmail.com> - 2019-06-18 17:40 +0200
                Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-18 18:30 +0200
                Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-18 18:20 +0200
                Re: IPv4 v IPv6 Reco <recoverym4n@enotuniq.net> - 2019-06-18 18:30 +0200
      Re: IPv4 v IPv6 David Wright <deblis@lionunicorn.co.uk> - 2019-06-18 18:20 +0200
        Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-18 18:30 +0200
          Re: IPv4 v IPv6 Nicholas Geovanis <nickgeovanis@gmail.com> - 2019-06-18 18:40 +0200
          Re: IPv4 v IPv6 David Wright <deblis@lionunicorn.co.uk> - 2019-06-22 05:10 +0200
            Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-22 10:50 +0200
              Re: IPv4 v IPv6 David Wright <deblis@lionunicorn.co.uk> - 2019-06-24 20:20 +0200
            Re: IPv4 v IPv6 Andy Smith <andy@strugglers.net> - 2019-06-22 21:40 +0200
              Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-22 22:50 +0200
                Re: IPv4 v IPv6 John Hasler <jhasler@newsguy.com> - 2019-06-22 23:40 +0200
                Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-23 02:30 +0200
                Re: IPv4 v IPv6 John Hasler <jhasler@newsguy.com> - 2019-06-23 05:00 +0200
                Re: IPv4 v IPv6 Gene Heskett <gheskett@shentel.net> - 2019-06-23 08:30 +0200
                Re: IPv4 v IPv6 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-23 11:20 +0200
              Re: IPv4 v IPv6 Andy Smith <andy@strugglers.net> - 2019-06-26 20:40 +0200
                Re: IPv4 v IPv6 Michael Stone <mstone@debian.org> - 2019-06-26 21:00 +0200
    Re: IPv4 v IPv6 Richard Hector <richard@walnut.gen.nz> - 2019-06-18 11:50 +0200
      Re: IPv4 v IPv6 Jonathan Dowland <jmtd@debian.org> - 2019-06-21 17:30 +0200
  Re: IPv4 v IPv6 andreimpopescu@gmail.com - 2019-07-02 11:10 +0200

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