I am testing a bit with containers and some of them I am giving multiple networks (just by adding interfaces on different networks). This way I can use the specific service on both networks. With some applications this seems to go fine. With others the 'wrong' ip address is being used, which results failed connection. Example: containter A has eth0 192.168.10.x/24 and eth1 192.168.122.x/24 When I ping this container from a vm only on the 192.168.10.x network. The 'first' ping fails (when 192.168.122.x is being resolved) the 2nd ping is ok because it resolves the 192.168.10.x ip Question: is there some setting in linux that it automatically selects/prefers the 'routable' ip from a dns lookup? Question: is there a standard for applications to handling multiple returned A records. So if eg. 3 records are returned, all are being tested until a valid connection has been found?
