[ 1239.459314][T11139] netdevsim netdevsim524 eni524np1: renamed from eth1 [ 1239.484149][T11141] netdevsim netdevsim320 eni320np1: renamed from eth0 [ 1242.900077][T11133] Could not find device with ifindex 2000 in netnsfd 11 [ 1242.900962][T11133] Could not find netns with fd: 2000 [ 1242.901620][T11133] Cannot link a netdevsim to itself [ 1242.902670][T11133] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).