[  799.856932][T14586] netdevsim netdevsim502 eni502np1: renamed from eth0
[  799.874228][T14588] netdevsim netdevsim721 eni721np1: renamed from eth1
[  800.509442][T14574] Could not find device with ifindex 2000 in netnsfd 11
[  800.510420][T14574] Could not find netns with fd: 2000
[  800.510988][T14574] Cannot link a netdevsim to itself
[  800.511610][T14574] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).