[  521.797568] netdevsim netdevsim379 eni379np1: renamed from eth0
[  521.893950] netdevsim netdevsim515 eni515np1: renamed from eth1
[  522.121209] Could not find device with ifindex 2000 in netnsfd 11
[  522.121388] Could not find netns with fd: 2000
[  522.121463] Cannot link a netdevsim to itself
[  522.121574] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).