[141948] in North American Network Operators' Group
Re: The stupidity of trying to "fix" DHCPv6
daemon@ATHENA.MIT.EDU (Leo Bicknell)
Tue Jun 14 17:25:34 2011
Date: Tue, 14 Jun 2011 14:24:48 -0700
From: Leo Bicknell <bicknell@ufp.org>
To: nanog@nanog.org
Mail-Followup-To: nanog@nanog.org
In-Reply-To: <5A1E9F84-99F5-47AD-B8B2-6BB0E12CAABD@bjencks.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
--VbJkn9YxBvnuCH5J
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
In a message written on Tue, Jun 14, 2011 at 05:01:24PM -0400, Ben Jencks w=
rote:
> > Lastly, there's a hidden bit here many people haven't dealt with
> > yet in lab networks. In IPv4 critical environments it's typical
> > to use HSRP or VRRP to provide a single gateway across two routers.
> > The IPv6 way to do this is to have both advertise RA's, possibly
> > with different priorities.
>=20
> Erm, I thought the IPv6 way to do it was to use IPv6 VRRP... I've heard o=
f some vendor bugs on it, but it's implemented.
You can do VRRPv6 (now, finally, on some platforms). However, the
standard way this works is, wait for it, advertising the default
gateway via RA's!
At least you can static route to the VRRPv6 address and that works
without RA's. Again, it would be nice to give out the address in
DHCPv6 and not need RA's at all, but alas there is no default route
field in DHCPv6.
--=20
Leo Bicknell - bicknell@ufp.org - CCIE 3440
PGP keys at http://www.ufp.org/~bicknell/
--VbJkn9YxBvnuCH5J
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.13 (FreeBSD)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=BpoF
-----END PGP SIGNATURE-----
--VbJkn9YxBvnuCH5J--
