[  489.557511] netdevsim netdevsim423 eni423np1: renamed from eth0
[  489.654734] netdevsim netdevsim560 eni560np1: renamed from eth1
[  489.902438] Could not find device with ifindex 2000 in netnsfd 11
[  489.902714] Could not find netns with fd: 2000
[  489.902827] Cannot link a netdevsim to itself
[  489.902942] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).