[  489.283093] netdevsim netdevsim734 eni734np1: renamed from eth1
[  489.380004] netdevsim netdevsim491 eni491np1: renamed from eth0
[  489.604826] Could not find device with ifindex 2000 in netnsfd 11
[  489.605094] Could not find netns with fd: 2000
[  489.605184] Cannot link a netdevsim to itself
[  489.605285] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).