mån 2006-11-13 klockan 23:03 -0500 skrev Chad Harrelson: > I enabled ip_forwarding (echo 1 > /proc/sys/net/ipv4/ip_forward), > however I did not disable rp_filter. Do I need to do that on all > interfaces? No, only the gre interface. But if you don't see the gre packets with tcpdump then something is very wrong.. Regards Henrik