[  520.653158] netdevsim netdevsim456 eni456np1: renamed from eth0
[  520.750692] netdevsim netdevsim573 eni573np1: renamed from eth1
[  520.972401] Could not find device with ifindex 2000 in netnsfd 11
[  520.972590] Could not find netns with fd: 2000
[  520.972684] Cannot link a netdevsim to itself
[  520.972802] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).