>Can someone assist with gif tunnel setup under NetBSD 1.6.
>
>I'd like to do the following:
>
>  Host-A ---- Router-B ======== Router-C ----- Host-D
>
>Where there is a gif tunnel from Router-B to Router-C.
>
>However, despite my best efforts, I cannot get connection from Host-A to
>Host-D.  Router-B can ping Router-C and Host-D.  Router-C can ping Router-B
>and Host-A.  Further, Host-A can ping Router-C's gif endpoint.
>
>However, when Host-A pings either Host-D or any non-gif interface on
>Router-C, tcpdump says the packets from Router-B enter Router-C's external
>interface, but never appear again.  It seems that if the source or
>destination is not the gif endpoint, the packets are not delivered at the
>destination.
>
>Any ideas?  How-Tos?

	- are there any interesting numbers increased in netstat -sn? (test
	  it on Router-C before and after the test)
	- make sure net.inet.ip.forwarding set to 1 on Router-[BC].
	- depending on your topology setup, you need IFF_LINK2 set on gif
	  interface.  see gif(4) for details.

itojun