On 2013/03/27 12:56, Peter Hessler wrote: > nat64 is built-in to pf > > On 2013 Mar 27 (Wed) at 11:49:30 +0100 (+0100), Viktor Horváth wrote: > :Hello to everyone, > : > :I need help to my Diploma thesis. I have to test 6to4 relay implementations > :on openbsd. Which working 6to4 relay implementations are there out for > :openbsd? (Including the tunnel maker softwares.) > :Thank you for the answer!
Besides the methods which were already mentioned, there's also gre(4), and you can carry ipv6 inside ipv4 (and vice-versa) with ipsec (gif is basically a version of this last case without the ipsec). And other generic tunnelling protocols can be used, e.g. carrying v6 in ethernet packets over a layer 2 tunnel, ssh tun forwarding, openvpn, openconnect etc. nat64 normally works in combination with a special dns resolver (e.g. 'dns64' options in newer versions of BIND, there is a patchset for unbound to do this, totd) and as the name implies works by address (and protocol) rewriting rather than tunnelling.
