[  484.458262] netdevsim netdevsim286 eni286np1: renamed from eth0
[  484.458905] netdevsim netdevsim750 eni750np1: renamed from eth1
[  484.540962] Could not find device with ifindex 2000 in netnsfd 11
[  484.541052] Could not find netns with fd: 2000
[  484.541095] Cannot link a netdevsim to itself
[  484.541142] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).