[  512.358671] netdevsim netdevsim273 eni273np1: renamed from eth0
[  512.456253] netdevsim netdevsim543 eni543np1: renamed from eth1
[  512.730862] Could not find device with ifindex 2000 in netnsfd 11
[  512.731066] Could not find netns with fd: 2000
[  512.731164] Cannot link a netdevsim to itself
[  512.731280] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).