[  459.819044] netdevsim netdevsim403 eni403np1: renamed from eth0
[  459.821459] netdevsim netdevsim643 eni643np1: renamed from eth1
[  459.913156] Could not find device with ifindex 2000 in netnsfd 11
[  459.913282] Could not find netns with fd: 2000
[  459.913340] Cannot link a netdevsim to itself
[  459.913406] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).