[  477.283650] netdevsim netdevsim639 eni639np1: renamed from eth1
[  477.379961] netdevsim netdevsim478 eni478np1: renamed from eth0
[  477.632645] Could not find device with ifindex 2000 in netnsfd 11
[  477.632884] Could not find netns with fd: 2000
[  477.632994] Cannot link a netdevsim to itself
[  477.633113] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).