[  694.098811][T13059] netdevsim netdevsim501 eni501np1: renamed from eth0
[  694.119908][T13061] netdevsim netdevsim666 eni666np1: renamed from eth1
[  694.721004][T13047] Could not find device with ifindex 2000 in netnsfd 11
[  694.721844][T13047] Could not find netns with fd: 2000
[  694.722318][T13047] Cannot link a netdevsim to itself
[  694.722778][T13047] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).