[  485.521345] netdevsim netdevsim722 eni722np1: renamed from eth1
[  485.618485] netdevsim netdevsim475 eni475np1: renamed from eth0
[  485.807146] Could not find device with ifindex 2000 in netnsfd 11
[  485.807408] Could not find netns with fd: 2000
[  485.807480] Cannot link a netdevsim to itself
[  485.807573] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).