[  521.203671] netdevsim netdevsim726 eni726np1: renamed from eth1
[  521.300849] netdevsim netdevsim427 eni427np1: renamed from eth0
[  521.495511] Could not find device with ifindex 2000 in netnsfd 11
[  521.495670] Could not find netns with fd: 2000
[  521.495745] Cannot link a netdevsim to itself
[  521.495833] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).