[  459.432107] netdevsim netdevsim399 eni399np1: renamed from eth0
[  459.432508] netdevsim netdevsim660 eni660np1: renamed from eth1
[  459.518250] Could not find device with ifindex 2000 in netnsfd 11
[  459.518371] Could not find netns with fd: 2000
[  459.518419] Cannot link a netdevsim to itself
[  459.518470] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).