[  521.270819] netdevsim netdevsim406 eni406np1: renamed from eth0
[  521.368229] netdevsim netdevsim731 eni731np1: renamed from eth1
[  521.606226] Could not find device with ifindex 2000 in netnsfd 11
[  521.606414] Could not find netns with fd: 2000
[  521.606502] Cannot link a netdevsim to itself
[  521.606608] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).