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Date:      Mon, 14 Dec 2009 13:56:12 -0800
From:      "Li, Qing" <qing.li@bluecoat.com>
To:        "JASSAL Aman" <aman.jassal@esigetel.fr>, "Dennis Glatting" <freebsd@penx.com>
Cc:        freebsd-net@freebsd.org
Subject:   RE: Understanding multiple IPv6 interfaces under 8.0 (fwd)
Message-ID:  <B583FBF374231F4A89607B4D08578A430619B3A2@bcs-mail03.internal.cacheflow.com>
In-Reply-To: <9223.83.206.131.26.1260781902.squirrel@webmail.esigetel.fr>
References:  <alpine.BSF.2.00.0912131456440.83238@Elmer.dco.penx.com> <9223.83.206.131.26.1260781902.squirrel@webmail.esigetel.fr>

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>=20
> Hmm, the entry for fd7c:3f2b:e791:1:0:1:ac13:a0a looks suspect. I was
> expecting bce1 rather than lo0, I suppose you were as well :)
>

	This loopback route is necessary for short circuiting traffic to
	local address within a node.

	-- Qing


>
> If I'm not mistaken, the packets emanating from bce1 go to the
loopback
> interface, thus not really going out. You can try specifying the route
> manually with "route add *your parameters*" or even set it in
> /etc/rc.conf
> so that it's loaded at boot-time. There's no reason why among 2
> physical
> interfaces sharing the same fabric, one can ship packets out and the
> other
> can't.
>=20
> >
> > Elmer's rc.config:
> >
> >
> > ipv6_enable=3D"YES" ipv6_network_interfaces=3D"bce0 bce1"
> > ipv6_ifconfig_bce0=3D"FD7C:3F2B:E791:0001::0:172.19.10.10 prefixlen
64"
> > ipv6_ifconfig_bce1=3D"FD7C:3F2B:E791:0001::1:172.19.10.10 prefixlen =
64
> mtu
> > 8192"
> > ipv6_defaultrouter=3D"FD7C:3F2B:E791:0001::1"
> >
>=20
> Erm... You're using IPv4 addresses encapsulated in IPv6 ? I've never
> used
> this myself so I can't really comment, and I can't say if there aren't
> any
> sort of "interferences" with what you're trying to do.
>=20
> >
> >
> > The router (cisco):
> >
> >
> > interface GigabitEthernet0/0 ipv6 address FD7C:3F2B:E791:1::1/64
ipv6
> > enable ipv6 nd prefix FD7C:3F2B:E791:1::/64 (etc)
> >
>=20
> Just a side-note, I'm not sure if it will be really useful to you, but
> you
> could give it a try if you want to. Have you tried using your Cisco
> router
> as a Router Advertisement Daemon ? That way, addresses would be built
> automatically and you could see how both interfaces react to such
> advertisements.
>=20
> I hope this helps.
>=20
> ------------
> Aman Jassal
>=20
> Wisdom comes from experience.
> Experience comes from a lack of wisdom.
>=20
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