[  523.714100] netdevsim netdevsim305 eni305np1: renamed from eth0
[  523.810202] netdevsim netdevsim697 eni697np1: renamed from eth1
[  524.067633] Could not find device with ifindex 2000 in netnsfd 11
[  524.067915] Could not find netns with fd: 2000
[  524.068083] Cannot link a netdevsim to itself
[  524.068246] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).