[  478.035511] netdevsim netdevsim348 eni348np1: renamed from eth0
[  478.035995] netdevsim netdevsim670 eni670np1: renamed from eth1
[  478.135815] Could not find device with ifindex 2000 in netnsfd 11
[  478.135945] Could not find netns with fd: 2000
[  478.136055] Cannot link a netdevsim to itself
[  478.136174] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).