[  488.283736] netdevsim netdevsim346 eni346np1: renamed from eth0
[  488.284095] netdevsim netdevsim722 eni722np1: renamed from eth1
[  488.356410] Could not find device with ifindex 2000 in netnsfd 11
[  488.356498] Could not find netns with fd: 2000
[  488.356540] Cannot link a netdevsim to itself
[  488.356587] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).