im in the process of configurating our network to have two upstream providers, it will be loadbalanced under normal operation and a complete failover if one of the lines would fail. internet internet | | border border | | |- core router - | | lan the "problem" im having is that i will not do nat on the core router, but on the border routers. the multipath default route is on the core router. from what i understand, could be totally wrong, you have to have nat, at least connection tracking on the core to make the multipath route per flow and not per packet. any insight of this? -tomas bonnedahl