[  513.941438] netdevsim netdevsim666 eni666np1: renamed from eth1
[  514.039180] netdevsim netdevsim386 eni386np1: renamed from eth0
[  514.250908] Could not find device with ifindex 2000 in netnsfd 11
[  514.251056] Could not find netns with fd: 2000
[  514.251150] Cannot link a netdevsim to itself
[  514.251250] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).