[  489.553395] netdevsim netdevsim394 eni394np1: renamed from eth0
[  489.555043] netdevsim netdevsim757 eni757np1: renamed from eth0
[  489.647827] Could not find device with ifindex 2000 in netnsfd 11
[  489.647973] Could not find netns with fd: 2000
[  489.648085] Cannot link a netdevsim to itself
[  489.648207] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).