Re: is that possible?

[Bastien Durel <bastien.durel@data.fr>]

> i have here subnodes 10.30.x.x
> 
> to the net 10.30.192.x
> 
> now in every subnet i would like to mount ipv6
> 
> example
> in server 10.30.1.1 witch is using the internal ipv6 addres
> 2002:a1e:101::(radvd)
> mount a tunnel server to make a connections to ipv6 computers on net
> 10.30.130.1 witch is using the internal ipv6 addres 2002:a1e:8201::
> (radvd)
> 
You only need a tunnel if there is a non-ipv6 compilant router between
your two subnets. Otherwise, all you need is a(some) route(s).
Let us know your network topology if you want more precise tips ;)

> now with that theory i can make the internal ipv6 address from subnodes
> reachables ? (2002:a1e:101::/64)---to---(2002:a1e:8201::/64) over
> tunnel(10.30.1.1)----to----(10.30.130.1)
> 
> 
> if that is doable please let me know , and where i can download the tunnel
> server and client
You do not need client/server softwares to use tunnels, you just need
configuration tools. Let's say you use iproute2 :
1$ ip tunnel add tun mode sit remote 10.30.130.1
1$ ip -6 addr add 2002:a1e:101:42::1/64 dev tun
1$ ip -6 route add 2002:a1e:8201::/64 via 2002:a1e:101:42::2 dev tun

2$ ip tunnel add tun mode sit remote 10.30.1.1
2$ ip -6 addr add 2002:a1e:101:42::2/64 dev tun
2$ ip -6 route add 2002:a1e:101::/64 via 2002:a1e:101:42::1 dev tun

I took 2002:a1e:101:42::1/64 for the tunnel prefix, any other should
work, as soon as it's différent from your other prefixes.

Regards,

-- 
Bastien Durel.