[  490.054637] netdevsim netdevsim256 eni256np1: renamed from eth0
[  490.151771] netdevsim netdevsim568 eni568np1: renamed from eth1
[  490.372618] Could not find device with ifindex 2000 in netnsfd 11
[  490.372922] Could not find netns with fd: 2000
[  490.373031] Cannot link a netdevsim to itself
[  490.373156] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).