[  486.419315] netdevsim netdevsim637 eni637np1: renamed from eth1
[  486.515928] netdevsim netdevsim258 eni258np1: renamed from eth0
[  486.725907] Could not find device with ifindex 2000 in netnsfd 11
[  486.726241] Could not find netns with fd: 2000
[  486.726342] Cannot link a netdevsim to itself
[  486.726465] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).