[  522.357709] netdevsim netdevsim273 eni273np1: renamed from eth0
[  522.454298] netdevsim netdevsim603 eni603np1: renamed from eth1
[  522.738755] Could not find device with ifindex 2000 in netnsfd 11
[  522.738988] Could not find netns with fd: 2000
[  522.739077] Cannot link a netdevsim to itself
[  522.739175] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).