Hi, At office, we have I ISPs. I want to lightly monitor each link latency in order to decide several routing. For that, I have only one external server: 1 IP, it's an OVH dedicated server. The quick picture is http://s24.postimg.org/n3436z64l/defaul_route.png Default route is via ISP1. If OVH-server pings IP1: - the request will go through ISP1: it's OK - the reply will go through ISP1: it's OK If OVH-server pings IP2: - the request will go through ISP2: it's OK - the reply will go through ISP1: it's KO because the metric will involve ISP1 How could I tell the Office gateway (CentOS 6) "IF you reply to a ping request from the OVH server that came on IP2 THEN route it via IP2" -- +261 34 81 738 69
