[160999] in North American Network Operators' Group
Re: bgp for ipv6 question
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Thu Feb 21 15:57:12 2013
To: Owen DeLong <owen@delong.com>
In-Reply-To: Your message of "Thu, 14 Feb 2013 13:18:24 -0800."
<48BD6E36-A9B8-43E8-ACAE-86B97E4BE344@delong.com>
From: Valdis.Kletnieks@vt.edu
Date: Thu, 21 Feb 2013 15:55:20 -0500
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Thu, 14 Feb 2013 13:18:24 -0800, Owen DeLong said:
> On Feb 14, 2013, at 12:58 , Karl Auer <kauer@biplane.com.au> wrote:
> > On Thu, 2013-02-14 at 08:08 -0500, Jared Mauch wrote:
> >> I recommend keeping your network as congruent between IPv4 and IPv6 as possible, with dual-stack.
> > Why?
> For one thing, doing otherwise violates the principle of least astonishment.
Amen to that. Not too long ago, I blew about 3 hours trying to debug an odd
networking issue on my laptop - finally tracked it down to the fact that my
IPv4 default route was pointing out the ethernet on the docking station, but
IPv6 was defaulting to the wireless card. Took a while because I knew *damned*
well that Fedora had long ago included my patch to allow specifying a
preference metric for multiple interfaces, and that I had set it to prefer the
ethernet when both were connected.
Turns out that the patch worked just fine for v4, but nobody ever carried it
forward for v6....
(I probably should cook up a patch for the v6 side.. :)
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