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How establish 2 external networks which attaching to 2 routers as seperated gateway in neutron.


We are trying to set up 2 external networks that are attaching to neutron network node acting as 2 separated gateways. So that one vm instance in compute node will have 2 vnics attached with 2 private network and different traffic from the VM will be sent over separately to 2 external networks. The reason we like to do this is that the apps in VM will need to send traffic to 2 different servers which are sitting in 2 different subnets, and these 2 subnets are not routable between them.