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- --On Saturday, May 25, 2002 03:30:23 PM +0200 Michael Kjorling
<[EMAIL PROTECTED]> wrote:

> I have fought IPv6 in v4 tunnel setup on Linux myself, and know it's
> not very simple. But after a while I was able to get it down this in
> order to set the box up as a router to UUNet:
> 
>         echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
>         /usr/sbin/radvd
>         /sbin/ifconfig sit0 tunnel ::158.43.131.66
>         /sbin/ifconfig sit1 up
>         /sbin/ifconfig sit1 add 2001:600:4:8d9::2
>         /sbin/ifconfig sit0 up tunnel ::158.43.131.66
>         /sbin/ifconfig sit1 up
>         /sbin/ifconfig eth1 inet6 add 2001:600:101f::1/64
>         /sbin/ifconfig sit0 up tunnel ::158.43.131.66
>         /sbin/route -A inet6 add 2000::/3 gw ::158.43.131.66 dev
> sit0         /sbin/route -A inet6 add 2001:600:4:8d3::1/128 dev sit1
>         /sbin/route -A inet6 add 2001:600:4:8d9::1/128 dev sit1


...see howto, better to use "ip" for that. Your setup shows only a
numbered IPv6-in-IPv4 tunnel.

> I am sure there is a lot of redundancy in there, but it does bring
> up IPv6 networking fine. I thought maybe one could do the reverse
> (just use IPv6 addresses for the tunnel endpoint and IPv4 in the
> routing table) to set up an IPv4-in-v6 tunnel.

No, vanilla sit devices currently don't like IPv6 addresses for p2p.

        Peter
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