[  511.724332] netdevsim netdevsim665 eni665np1: renamed from eth1
[  511.822141] netdevsim netdevsim273 eni273np1: renamed from eth0
[  512.039002] Could not find device with ifindex 2000 in netnsfd 11
[  512.039178] Could not find netns with fd: 2000
[  512.039265] Cannot link a netdevsim to itself
[  512.039367] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).