[  488.403350] netdevsim netdevsim273 eni273np1: renamed from eth0
[  488.404054] netdevsim netdevsim683 eni683np1: renamed from eth1
[  488.494392] Could not find device with ifindex 2000 in netnsfd 11
[  488.494476] Could not find netns with fd: 2000
[  488.494520] Cannot link a netdevsim to itself
[  488.494570] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).