[  473.911958] netdevsim netdevsim665 eni665np1: renamed from eth1
[  473.913339] netdevsim netdevsim500 eni500np1: renamed from eth0
[  473.991554] Could not find device with ifindex 2000 in netnsfd 11
[  473.991626] Could not find netns with fd: 2000
[  473.991659] Cannot link a netdevsim to itself
[  473.991697] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).