[ 1222.317685][T11147] netdevsim netdevsim595 eni595np1: renamed from eth1 [ 1222.324066][T11148] netdevsim netdevsim421 eni421np1: renamed from eth0 [ 1225.689416][T11140] Could not find device with ifindex 2000 in netnsfd 11 [ 1225.690106][T11140] Could not find netns with fd: 2000 [ 1225.690649][T11140] Cannot link a netdevsim to itself [ 1225.691357][T11140] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).