[  471.979534] netdevsim netdevsim661 eni661np1: renamed from eth1
[  471.980345] netdevsim netdevsim293 eni293np1: renamed from eth0
[  472.063287] Could not find device with ifindex 2000 in netnsfd 11
[  472.063435] Could not find netns with fd: 2000
[  472.063538] Cannot link a netdevsim to itself
[  472.063660] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).