[  520.404109] netdevsim netdevsim436 eni436np1: renamed from eth0
[  520.500534] netdevsim netdevsim635 eni635np1: renamed from eth1
[  520.765723] Could not find device with ifindex 2000 in netnsfd 11
[  520.765942] Could not find netns with fd: 2000
[  520.766087] Cannot link a netdevsim to itself
[  520.766179] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).