[  850.867856][T15854] netdevsim netdevsim407 eni407np1: renamed from eth0
[  850.905398][T15855] netdevsim netdevsim723 eni723np1: renamed from eth1
[  851.597220][T15840] Could not find device with ifindex 2000 in netnsfd 11
[  851.597902][T15840] Could not find netns with fd: 2000
[  851.598395][T15840] Cannot link a netdevsim to itself
[  851.598969][T15840] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).