[  646.251338][T10005] netdevsim netdevsim473 eni473np1: renamed from eth0
[  646.257172][T10004] netdevsim netdevsim672 eni672np1: renamed from eth1
[  646.944675][ T9991] Could not find device with ifindex 2000 in netnsfd 11
[  646.945634][ T9991] Could not find netns with fd: 2000
[  646.946193][ T9991] Cannot link a netdevsim to itself
[  646.946804][ T9991] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).