I have a Linux 2.6.16 machine with two gigabit ethernet adapters that I would like to use for testing Ethernet equipment---right now just an Ethernet cable, but later switches, bridges, etc. I tried assigning the two adapters IPs of 192.168.50.1 and 192.168.51.1 and then setup the routing table to direct 192.168.51.0/24 traffic to the first adapter, and 192.168.50.0/24 traffic to the second, but when I run ``ping -I 192.168.50.1 192.168.51.1'''' the packets are routed over lo instead of eth0/eth1. Can someone suggest an alternative setup that will work? Thanks.