Is there a multi-homing FAQ? I've not been able to find it. Here's my system's configuration: eth0: SDSL at 216.15.108.186 (dnai-net) eth1: ADSL at 67.114.175.138 (sbc-net) eth2: DHCP network at 192.168.1.1 . lo: 127.0.0.1 There is a firewall box acting as the DHCP server and router for the systems on the DHCP net. The Linux system doesn't run DHCP or masquerading. If a connection is accepted on the IP address of one of these interfaces, I'd like its packets to go out on the same interface. If there is a failure on the path to eth0, connections to eth1 should continue to work, and vice versa. But right now, eth0 has the default route and just about every packet goes out of eth0 regardless of what interface they come in. So, I tried this: ip rule add from 216.15.108.186 table dnai-net ip rule add from 67.114.175.138 table sbc-net ip route add default via 216.15.108.186 dev eth0 table dnai-net ip route add default via 67.114.175.138 dev eth1 table sbc-net This doesn't work. I get a destination unreachable if I try to follow either route. So, what am I doing wrong? Thanks Bruce Perens