[  520.297931] netdevsim netdevsim423 eni423np1: renamed from eth0
[  520.394515] netdevsim netdevsim652 eni652np1: renamed from eth1
[  520.643830] Could not find device with ifindex 2000 in netnsfd 11
[  520.644008] Could not find netns with fd: 2000
[  520.644111] Cannot link a netdevsim to itself
[  520.644222] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).