DockerHostUnlessnotifiedaboutthecontainernetworks,thephysicalnetworkdoesnothavearoutetotheirsubnetsWhohas10.16.20.0/24?Whohas10.1.20.0/24?ContainerscanbeondifferentsubnetsandreacheachotherIpvlanL3ModeEth0192.168.50.10/24ParentinterfaceactsasaRouterAllcontainerscanpingeachotherarouterifwithouttheysharetheparentinterface (sameexampleeth0)Container(s)Eth010.1.20.x/24Container(s)Eth0172.16.20.x/24PhysicalNetwork