Problems with gif tunnels

[Stephen J. Bevan]

Jeremie Le Hen writes:
 > Given the simplicity of gif(4) IP-encapsulated packets, I wonder
 > how Linux guys could have implemented something else in their IPIP
 > module :-).

They didn't, Linux IPIP exactly what it sounds like it does: IP in IP
encapsulation.  The confusion seems to be on the part of FreeBSD guys
who can't tell their gre(4) from their gif(4) :-)