[  515.282198] netdevsim netdevsim667 eni667np1: renamed from eth1
[  515.376205] netdevsim netdevsim258 eni258np1: renamed from eth0
[  515.750777] Could not find device with ifindex 2000 in netnsfd 11
[  515.751113] Could not find netns with fd: 2000
[  515.751279] Cannot link a netdevsim to itself
[  515.751506] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).