[  521.416305] netdevsim netdevsim522 eni522np1: renamed from eth1
[  521.513071] netdevsim netdevsim270 eni270np1: renamed from eth0
[  521.755836] Could not find device with ifindex 2000 in netnsfd 11
[  521.756130] Could not find netns with fd: 2000
[  521.756269] Cannot link a netdevsim to itself
[  521.756431] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).