[  521.284410] netdevsim netdevsim347 eni347np1: renamed from eth0
[  521.381534] netdevsim netdevsim633 eni633np1: renamed from eth1
[  521.625577] Could not find device with ifindex 2000 in netnsfd 11
[  521.625792] Could not find netns with fd: 2000
[  521.625907] Cannot link a netdevsim to itself
[  521.626032] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).