[  489.888387] netdevsim netdevsim453 eni453np1: renamed from eth0
[  489.890659] netdevsim netdevsim648 eni648np1: renamed from eth1
[  489.990785] Could not find device with ifindex 2000 in netnsfd 11
[  489.990894] Could not find netns with fd: 2000
[  489.990967] Cannot link a netdevsim to itself
[  489.991042] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).