[  454.752296] netdevsim netdevsim506 eni506np1: renamed from eth0
[  454.754134] netdevsim netdevsim671 eni671np1: renamed from eth1
[  454.842335] Could not find device with ifindex 2000 in netnsfd 11
[  454.842483] Could not find netns with fd: 2000
[  454.842584] Cannot link a netdevsim to itself
[  454.842729] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).