I have a test webserver with two NICs: Eth0: xxx.xxx.ba.3/24 Eth1: xxx.xxx.bb.115/28
Route Table: Destination Gateway Genmask Flags Metric Ref Use Iface xxx.xxx.bb.112 xxx.xxx.bb.113 255.255.255.240 UG 0 0 0 eth1 xxx.xxx.bb.112 0.0.0.0 255.255.255.240 U 0 0 0 eth1 xxx.xxx.ba.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 xxx.xxx.ba.254 0.0.0.0 UG 0 0 0 eth0 Eth0 is directly connected to core router, which has an IP of xxx.xxx.ba.254 Eth1 is connected to a Loadbalancer, which has an IP of xxx.xxx.bb.113 (Which is connected to core Router) Core Router has route for xxx.xxx.bb.112/28 -> xxx.xxx.bb.113 Traffic from external: Connections to xxx.xxx.ba.3 are all successful. Connections to xxx.xxx.bb.115 all fail. Connections to xxx.xxx.bb.113(Loadbalancer) are all successful. If I run tcpdump on eth1, I can see the traffic hitting the webserver, but it never returns - It appears to throw it back out via the webservers default gw (xxx.xxx.ba.254). FYI: I have another test webserver (Single NIC), sitting behind loadbalancer, with IP of xxx.xxx.bb.114/28 (Def. GW xxx.xxx.bb.113) which can successfully be contacted from external. Is there anyway I can force traffic to go back out via the NIC it came in on? Regards, MB
