[  472.660741] netdevsim netdevsim345 eni345np1: renamed from eth0
[  472.661245] netdevsim netdevsim667 eni667np1: renamed from eth1
[  472.743783] Could not find device with ifindex 2000 in netnsfd 11
[  472.743930] Could not find netns with fd: 2000
[  472.744034] Cannot link a netdevsim to itself
[  472.744149] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).