[  472.510731] netdevsim netdevsim256 eni256np1: renamed from eth0
[  472.511221] netdevsim netdevsim653 eni653np1: renamed from eth1
[  472.586175] Could not find device with ifindex 2000 in netnsfd 11
[  472.586325] Could not find netns with fd: 2000
[  472.586453] Cannot link a netdevsim to itself
[  472.586598] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).