Re: [l2tpns-users] IPv6 support

[Jonathan M. <no...@ea...>]

On Sat, Jun 11, 2005 at 12:09:06PM +0200, Christian Seitz wrote:
> I want to setup a linux router for terminating l2tp sessions from adsl 
> users and one of the important features for me is IPv6. The Debian version 
> of l2tpns (unstable) is still at 2.0.14-1, so I built a Debian package 
> 2.1.0 from CVS and a libcli 1.8.5 (Debian unstable is still at 1.8.4), 
> because with 1.8.4 the 2.1.0 does not compile (cli_error undefined).

As Brendan has said 1.8.5 is in unstable now; I'll look at getting a
2.0.21 package uploaded this week and as soon as I've verified 2.1.0
works for me in production I'll upload that.

> My problem is that l2tpns does not set any IPv6 routes or prefixes. I'm 
> using freeradius for authentication and Framed-IPv6-Prefix and 
> Framed-IPv6-Route are parts of the radius reply. I also set ipv6_prefix in 
> /etc/l2tpns/startup-config. l2tpns only logs the error message "IPv6 not 
> configured; ignoring IPv6CP".
>
> Can anybody give me examples for ipv6_prefix in startup-config and the 
> radius replies Framed-IPv6-Prefix and, if necessary, Framed-IPv6-Route?

I'm running with:

"set ipv6_prefix 2001:1b40:0:2000::"

in the config (first 64 bits are the only ones used) and using RADIUS
config like "Framed-IPv6-Route := 2001:1b40:1::/48", which is all
working fine for me in production.

Framed-IPv6-Prefix isn't supported at present; in fact the RA support is
pretty limited too - we'll response to router solicitions, but not send
out regular advertisements. As I'm mainly running with routed /48s to
customers who want IPv6 this hasn't been much of an issue for me, but I
have wondered if we should be sending the advertisements every so often.

J.

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