[  521.137169] netdevsim netdevsim746 eni746np1: renamed from eth1
[  521.233700] netdevsim netdevsim326 eni326np1: renamed from eth0
[  521.489683] Could not find device with ifindex 2000 in netnsfd 11
[  521.489888] Could not find netns with fd: 2000
[  521.489995] Cannot link a netdevsim to itself
[  521.490110] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).