[Xorp-users] IPv6 Router Advertisements?

[Pavlin Radoslavov]

> I am running XORP version 1.4 on Debian Linux/unstable.I am trying to  
> configure XORP to be an IPv4 multicast router on the end of a tunnel  
> to a Cisco and an IPv6 Unicast & Multicast router on the end of  
> another tunnel to a Cisco.

If you want to use Linux as IPv6 multicast router, you should know
that the default Linux kernel doesn't have IPv6 multicast forwarding
support. You need to use the USAGI kernel instead which has
Mickael Hoerdt's patch included. See the following email for
additional info:
http://mailman.icsi.berkeley.edu/pipermail/xorp-users/2005-November/000901.html

> To complicate matters, my IPv4 hosts are part of a large (/22)  
> subnet. So I have my box setup as an Ethernet Bridge and using  
> ebtables to prevent the multicast and IPv6 traffic leaking into the  
> rest of the subnet. I wish it didn't have to be this way but my  
> University's network staff won't give me my own subnet.
> 
> https://www.surgeradio.co.uk/wiki/index.php/Image:Surge-network- 
> topology.png
> 
> 
> Has anyone else had any success with such a setup?

Unfortunately I don't know whether such setup will work.

> 
> Does XORP support IPv6 Router Advertisements? I can't see any mention  
> of it in the manual, but I thought it would be something that would  
> be built-in. Do I have to use radvd instead?

No, it doesn't send IPv6 Router Advertisements, but yes it
should. In the mean time you need to use radvd instead.
FYI, I just created a Bugzilla entry for that new feature:
http://www.xorp.org/bugzilla/show_bug.cgi?id=702

Regards,
Pavlin