>> ...in FC1... >> eth0 and eth1 are in the same subnet and are two separate onboard >> nic's. Eth0 comes up on boot, eth1 is manual. >> If I take down eth1 via ifdown eth1 it seems like the route >> is mangled, or at least the gateway is removed. I have no confirmed >> the route tables being modified, but it is reproducible. > What exactly do you mean by on the "same subnet". On the same > physical network? Are you dual subnetting (running two different > subnet address blocks on the same physicial link)? Or are you really > running the same subnet and trying to split traffic across both cards? Sorry for the confusion, I'm running the same subnet, 255.255.0.0 on both nic's. I just want to keep the traffic that hits the ip on the second nic as seperated as possible from the first nic. > Perhaps just the output of these files will help: > /etc/sysconfig/network-scripts/ifcfg-eth0 > /etc/sysconfig/network-scripts/ifcfg-eth1 ifcfg-eth0: DEVICE=eth0 BOOTPROTO=static HWADDR=00:0D:60:4E:90:B4 IPADDR=10.x.y.107 NETMASK=255.255.0.0 ONBOOT=yes TYPE=Ethernet ifcfg-eth1: DEVICE=eth1 BOOTPROTO=static HWADDR=00:0D:60:4E:90:B5 ONBOOT=no TYPE=Ethernet IPADDR=10.x.y.121 NETMASK=255.255.0.0 /etc/sysconfig/network: NETWORKING=yes GATEWAY=10.x.y.1 > As well as any other advanced settings you may have made, > especially routing-related settings. Nothing funny as far as static routes, etc. > Also try running this command > /sbin/ip route list > both before and after you take down eth1. eth0 up and eth1 down (normal boot): 10.1.0.0/16 dev eth0 scope link 127.0.0.0/8 dev lo scope link default via 10.x.y.1 dev eth0 eth0 up and eth1 up (via ifup eth1): 10.1.0.0/16 dev eth1 scope link 10.1.0.0/16 dev eth1 proto kernel scope link src 10.x.y.121 127.0.0.0/8 dev lo scope link default via 10.x.y.1 dev eth1 eth0 up and eth1 down (via ifdown eth1): 127.0.0.0/8 dev lo scope link eth0 up and eth1 down(via /etc/init.d/network restart): 10.1.0.0/16 dev eth0 scope link 127.0.0.0/8 dev lo scope link default via 10.x.y.1 dev eth0 So, looks like the default gw is being removed. Any ideas? Thanks! Dave
