[  750.396914][T14572] netdevsim netdevsim421 eni421np1: renamed from eth0
[  750.420427][T14574] netdevsim netdevsim658 eni658np1: renamed from eth1
[  750.962374][T14560] Could not find device with ifindex 2000 in netnsfd 11
[  750.962885][T14560] Could not find netns with fd: 2000
[  750.963228][T14560] Cannot link a netdevsim to itself
[  750.963618][T14560] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).