2 NICs, 1 IP?
 

Hi,

I am running OpenBSD router with two NICs facing two internal network switches all on the same subnet, and one NIC going to my ISP. Can i make both of the internal network NICs answer to the same IP so i can have a load balanced uplink? I heard bridging can do this.

bridging could do this, then using some iptables rules, you could route trafic to physical interface (i.e. using mac address) to do balancing between interfaces. Not very hard to do, if you have any minimal knowledge of *nix and iptables you will find this easy.