[  522.182091] netdevsim netdevsim687 eni687np1: renamed from eth1
[  522.279217] netdevsim netdevsim494 eni494np1: renamed from eth0
[  522.527465] Could not find device with ifindex 2000 in netnsfd 11
[  522.527656] Could not find netns with fd: 2000
[  522.527743] Cannot link a netdevsim to itself
[  522.527885] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).