[  472.549019] netdevsim netdevsim394 eni394np1: renamed from eth0
[  472.549714] netdevsim netdevsim688 eni688np1: renamed from eth1
[  472.621973] Could not find device with ifindex 2000 in netnsfd 11
[  472.622052] Could not find netns with fd: 2000
[  472.622098] Cannot link a netdevsim to itself
[  472.622145] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).