[  454.878364] netdevsim netdevsim506 eni506np1: renamed from eth0
[  454.878841] netdevsim netdevsim684 eni684np1: renamed from eth1
[  454.968811] Could not find device with ifindex 2000 in netnsfd 11
[  454.968921] Could not find netns with fd: 2000
[  454.968976] Cannot link a netdevsim to itself
[  454.969029] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).