[  484.398803] netdevsim netdevsim477 eni477np1: renamed from eth0
[  484.499311] netdevsim netdevsim668 eni668np1: renamed from eth1
[  484.866800] Could not find device with ifindex 2000 in netnsfd 11
[  484.866952] Could not find netns with fd: 2000
[  484.867034] Cannot link a netdevsim to itself
[  484.867128] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).