Understanding multiple IPv6 interfaces under 8.0 (fwd)
qing.li at bluecoat.com
Mon Dec 14 21:57:10 UTC 2009
> 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.
> If I'm not mistaken, the packets emanating from bce1 go to the
> interface, thus not really going out. You can try specifying the route
> manually with "route add *your parameters*" or even set it in
> so that it's loaded at boot-time. There's no reason why among 2
> interfaces sharing the same fabric, one can ship packets out and the
> > Elmer's rc.config:
> > ipv6_enable="YES" ipv6_network_interfaces="bce0 bce1"
> > ipv6_ifconfig_bce0="FD7C:3F2B:E791:0001::0:172.19.10.10 prefixlen
> > ipv6_ifconfig_bce1="FD7C:3F2B:E791:0001::1:172.19.10.10 prefixlen 64
> > 8192"
> > ipv6_defaultrouter="FD7C:3F2B:E791:0001::1"
> Erm... You're using IPv4 addresses encapsulated in IPv6 ? I've never
> this myself so I can't really comment, and I can't say if there aren't
> sort of "interferences" with what you're trying to do.
> > The router (cisco):
> > interface GigabitEthernet0/0 ipv6 address FD7C:3F2B:E791:1::1/64
> > enable ipv6 nd prefix FD7C:3F2B:E791:1::/64 (etc)
> Just a side-note, I'm not sure if it will be really useful to you, but
> could give it a try if you want to. Have you tried using your Cisco
> as a Router Advertisement Daemon ? That way, addresses would be built
> automatically and you could see how both interfaces react to such
> I hope this helps.
> Aman Jassal
> Wisdom comes from experience.
> Experience comes from a lack of wisdom.
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