[  518.173692] netdevsim netdevsim497 eni497np1: renamed from eth0
[  518.270701] netdevsim netdevsim569 eni569np1: renamed from eth1
[  518.517833] Could not find device with ifindex 2000 in netnsfd 11
[  518.518010] Could not find netns with fd: 2000
[  518.518096] Cannot link a netdevsim to itself
[  518.518200] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).