[  490.452892] netdevsim netdevsim391 eni391np1: renamed from eth0
[  490.453462] netdevsim netdevsim615 eni615np1: renamed from eth1
[  490.533773] Could not find device with ifindex 2000 in netnsfd 11
[  490.533923] Could not find netns with fd: 2000
[  490.534009] Cannot link a netdevsim to itself
[  490.534089] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).