[  451.008262] netdevsim netdevsim722 eni722np1: renamed from eth1
[  451.105057] netdevsim netdevsim394 eni394np1: renamed from eth0
[  451.341109] Could not find device with ifindex 2000 in netnsfd 11
[  451.341366] Could not find netns with fd: 2000
[  451.341454] Cannot link a netdevsim to itself
[  451.341545] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).