[  522.650395] netdevsim netdevsim273 eni273np1: renamed from eth0
[  522.747819] netdevsim netdevsim553 eni553np1: renamed from eth1
[  522.978016] Could not find device with ifindex 2000 in netnsfd 11
[  522.978257] Could not find netns with fd: 2000
[  522.978349] Cannot link a netdevsim to itself
[  522.978471] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).