[  511.916343] netdevsim netdevsim397 eni397np1: renamed from eth0
[  512.014219] netdevsim netdevsim652 eni652np1: renamed from eth1
[  512.195780] Could not find device with ifindex 2000 in netnsfd 11
[  512.195959] Could not find netns with fd: 2000
[  512.196041] Cannot link a netdevsim to itself
[  512.196148] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).