[  521.209967] netdevsim netdevsim472 eni472np1: renamed from eth0
[  521.307501] netdevsim netdevsim638 eni638np1: renamed from eth1
[  521.524024] Could not find device with ifindex 2000 in netnsfd 11
[  521.524228] Could not find netns with fd: 2000
[  521.524323] Cannot link a netdevsim to itself
[  521.524440] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).