[ 1021.984412][T12133] netdevsim netdevsim336 eni336np1: renamed from eth0
[ 1021.987269][T12068] netdevsim netdevsim636 eni636np1: renamed from eth1
[ 1023.701823][T12555] Could not find device with ifindex 2000 in netnsfd 11
[ 1023.703378][T12555] Could not find netns with fd: 2000
[ 1023.704491][T12555] Cannot link a netdevsim to itself
[ 1023.705781][T12555] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).