Please CC me on all responses. The XFRM frame work seems to be bypassed by the use of advanced routing. I have ran the following test: Network: A <-------> B <---------> C where the IP of 'B' on network AB is j (eth0) and the IP of 'B' on network BC is k (eth1) Kernel 2.6.x: Be sure to have: Advanced Routing->Policy Routing compiled in your kernel. A) Setup IPsec ESP tunnels between computer A and B (both IP addresses k and j) B) Send packets to 'A' from 'B' with IP 'k'. Do this with: ip route add A src k dev eth0 C) Observe that these packets are unencrypted. Is this a known issue? Is someone already working to resolve it? Should I be asking if this is even considered an issue? Cheers, Thomas - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html