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IPv6 over IPv4 over PPPoE?

Ok, the route is there now.  Thanks.

However, I'm still having problems in that I can't ping the other end of
my tunnel. (3ffe:b00:c18:1fff:0:0:0:c2).  I see the traffic going out my
ppp0 interface, but I never get any replies.

Ideas?  I've been playing with my MTU, but that doesn't seem to help.  
My ISP recommends using an MTU of 1400 for regular traffic on my PPP
link, so I reduced all the sitX interfaces by 100.

% modprobe ipv6
% echo "1" >  /proc/sys/net/ipv6/conf/all/forwarding 
% ifconfig sit0 up mtu 1380
% ifconfig ppp0 add 3ffe:b00:c18:1fff:0:0:0:c3
% ifconfig sit0 tunnel ::
% ifconfig sit1 up mtu 1280
% route -A inet6 add ::0/0 gw fe80:: dev sit1 

On Mon, 22 May 2000, Chris Kennedy wrote:

> I think one thing that may be the only problem is the default route, the
> Linux 'route' program doesn't understand the default route by name, it
> wants 'route -A inet6 add ::/0 gw fe80:: dev sit1'.  That
> error means it is not adding the default route at all, I was confused by
> it at first too (I actually now use the iproute2 package, ip utilities,
> since they work better but are less documented).  I included my hack at a
> script for Linux and the ip utilities, it has Freenet6's default values
> (network and tunnel server ip) in it but could be used for any tunnel if
> adjusted, and may help if wanting to use the iproute2 package (this
> package is in the most of the newest Linux Distributions).