[  485.398394] netdevsim netdevsim415 eni415np1: renamed from eth0
[  485.498806] netdevsim netdevsim750 eni750np1: renamed from eth1
[  485.892042] Could not find device with ifindex 2000 in netnsfd 11
[  485.892227] Could not find netns with fd: 2000
[  485.892330] Cannot link a netdevsim to itself
[  485.892452] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).