Problems with gif tunnels

[Stephen J. Bevan]

Gianmarco Giovannelli writes:
 > Hi Greg, I have follow with interest this thread because I had a similar 
 > problem sometimes ago and we din't succeded in resolve it as I like ...
 > 
 > I had to connect a couple of  a nets with a freebsd box and a linux box 
 > (not managed by me). They insist to use the ipip tunnel (p:4) and I think I 
 > should use the  nos-tun interface ...

If Linux is using ipip then to connect to it from *BSD you should use gif(4).

 > Now I see I could simply use the gif interface (which I wrongly suppose did 
 > only GRE tunnel :-) to connect to an ipip linux tunnel. Is this right ?

Yes.