[  521.631516] netdevsim netdevsim487 eni487np1: renamed from eth0
[  521.728799] netdevsim netdevsim640 eni640np1: renamed from eth1
[  521.981830] Could not find device with ifindex 2000 in netnsfd 11
[  521.982030] Could not find netns with fd: 2000
[  521.982104] Cannot link a netdevsim to itself
[  521.982203] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).