[  484.209900] netdevsim netdevsim270 eni270np1: renamed from eth0
[  484.310757] netdevsim netdevsim666 eni666np1: renamed from eth1
[  484.663422] Could not find device with ifindex 2000 in netnsfd 11
[  484.663617] Could not find netns with fd: 2000
[  484.663742] Cannot link a netdevsim to itself
[  484.663877] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).