[  521.309204] netdevsim netdevsim742 eni742np1: renamed from eth1
[  521.406251] netdevsim netdevsim487 eni487np1: renamed from eth0
[  521.654713] Could not find device with ifindex 2000 in netnsfd 11
[  521.654944] Could not find netns with fd: 2000
[  521.655088] Cannot link a netdevsim to itself
[  521.655241] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).