[  455.227115] netdevsim netdevsim721 eni721np1: renamed from eth1
[  455.230920] netdevsim netdevsim292 eni292np1: renamed from eth0
[  455.319127] Could not find device with ifindex 2000 in netnsfd 11
[  455.319227] Could not find netns with fd: 2000
[  455.319279] Cannot link a netdevsim to itself
[  455.319330] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).