[  786.205298][T14623] netdevsim netdevsim421 eni421np1: renamed from eth0
[  786.227234][T14626] netdevsim netdevsim744 eni744np1: renamed from eth1
[  786.796468][T14611] Could not find device with ifindex 2000 in netnsfd 11
[  786.797350][T14611] Could not find netns with fd: 2000
[  786.797817][T14611] Cannot link a netdevsim to itself
[  786.798351][T14611] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).