[  492.251819] netdevsim netdevsim300 eni300np1: renamed from eth0
[  492.347198] netdevsim netdevsim750 eni750np1: renamed from eth1
[  492.600108] Could not find device with ifindex 2000 in netnsfd 11
[  492.600558] Could not find netns with fd: 2000
[  492.600703] Cannot link a netdevsim to itself
[  492.600856] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).