[  523.902718] netdevsim netdevsim754 eni754np1: renamed from eth1
[  524.000557] netdevsim netdevsim449 eni449np1: renamed from eth0
[  524.254316] Could not find device with ifindex 2000 in netnsfd 11
[  524.254516] Could not find netns with fd: 2000
[  524.254628] Cannot link a netdevsim to itself
[  524.254752] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).