[  521.954010] netdevsim netdevsim568 eni568np1: renamed from eth1
[  522.051540] netdevsim netdevsim506 eni506np1: renamed from eth0
[  522.290077] Could not find device with ifindex 2000 in netnsfd 11
[  522.290291] Could not find netns with fd: 2000
[  522.290394] Cannot link a netdevsim to itself
[  522.290502] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).