[  489.049801] netdevsim netdevsim471 eni471np1: renamed from eth0
[  489.149952] netdevsim netdevsim684 eni684np1: renamed from eth1
[  489.486290] Could not find device with ifindex 2000 in netnsfd 11
[  489.486447] Could not find netns with fd: 2000
[  489.486530] Cannot link a netdevsim to itself
[  489.486650] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).