[  685.022856][T11176] netdevsim netdevsim502 eni502np1: renamed from eth0
[  685.121567][T11175] netdevsim netdevsim721 eni721np1: renamed from eth1
[  686.919607][T11168] Could not find device with ifindex 2000 in netnsfd 11
[  686.920635][T11168] Could not find netns with fd: 2000
[  686.921321][T11168] Cannot link a netdevsim to itself
[  686.922130][T11168] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).