[  848.557703][T15790] netdevsim netdevsim342 eni342np1: renamed from eth0
[  848.565273][T15791] netdevsim netdevsim666 eni666np1: renamed from eth1
[  849.224041][T15779] Could not find device with ifindex 2000 in netnsfd 11
[  849.225189][T15779] Could not find netns with fd: 2000
[  849.226203][T15779] Cannot link a netdevsim to itself
[  849.226758][T15779] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).