[  644.538303][ T9998] netdevsim netdevsim416 eni416np1: renamed from eth0
[  644.543645][T10000] netdevsim netdevsim686 eni686np1: renamed from eth1
[  645.218444][ T9986] Could not find device with ifindex 2000 in netnsfd 11
[  645.219280][ T9986] Could not find netns with fd: 2000
[  645.219654][ T9986] Cannot link a netdevsim to itself
[  645.220124][ T9986] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).