[  863.759254][T15800] netdevsim netdevsim421 eni421np1: renamed from eth0
[  863.783971][T15803] netdevsim netdevsim563 eni563np1: renamed from eth1
[  864.435881][T15788] Could not find device with ifindex 2000 in netnsfd 11
[  864.436991][T15788] Could not find netns with fd: 2000
[  864.437667][T15788] Cannot link a netdevsim to itself
[  864.438407][T15788] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).