[  521.456817] netdevsim netdevsim543 eni543np1: renamed from eth1
[  521.553047] netdevsim netdevsim348 eni348np1: renamed from eth0
[  521.790900] Could not find device with ifindex 2000 in netnsfd 11
[  521.791074] Could not find netns with fd: 2000
[  521.791174] Cannot link a netdevsim to itself
[  521.791281] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).