[  521.632723] netdevsim netdevsim618 eni618np1: renamed from eth1
[  521.729698] netdevsim netdevsim454 eni454np1: renamed from eth0
[  521.954660] Could not find device with ifindex 2000 in netnsfd 11
[  521.954857] Could not find netns with fd: 2000
[  521.954958] Cannot link a netdevsim to itself
[  521.955081] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).