[  772.363212][T14497] netdevsim netdevsim441 eni441np1: renamed from eth0
[  772.370115][T14499] netdevsim netdevsim666 eni666np1: renamed from eth1
[  773.019835][T14485] Could not find device with ifindex 2000 in netnsfd 11
[  773.020359][T14485] Could not find netns with fd: 2000
[  773.021010][T14485] Cannot link a netdevsim to itself
[  773.021513][T14485] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).