I have an issue that can probably be solved by creating a new routing table for a specific interface only, but I am not sure how to do this. the host ======== macvtap0 of eth0 macvtap1 of eth1 with an ip 192.168.10.100 on a macvtap0 namespace testing ================= eth1 macvtap of host eth1 with eth1 and ip 192.168.122.100 If I would like to ping from the namespace to the host I add this route in the namespace ip route add 192.168.10.100 dev eth1 And this route on the host ip route add 192.168.122.100 dev macvtap1 This works wel until I add in the namespace eth0 macvtap of host eth0 with eth0 and ip 192.168.10.200 If I remove the namespace route of 192.168.10.100 dev eth1, then eth0 has (of course) correct connectivity. Thus interface eth1, 192.168.122.100 has correct connectivity having this route: ip route add 192.168.10.100 dev eth1 And interface eth0, 192.168.10.200 has correct connectivity without this route: ip route add 192.168.10.100 dev eth1 So I need to have some routing for eth1 that if it receives traffic from the host 192.168.10.100, it only replies to the host via this interface. And maybe that it only replies to traffic for 192.168.122.100? Any ideas?
