[  485.706512] netdevsim netdevsim540 eni540np1: renamed from eth1
[  485.807266] netdevsim netdevsim471 eni471np1: renamed from eth0
[  486.146562] Could not find device with ifindex 2000 in netnsfd 11
[  486.146755] Could not find netns with fd: 2000
[  486.146849] Cannot link a netdevsim to itself
[  486.146959] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).