[  484.355122] netdevsim netdevsim507 eni507np1: renamed from eth0
[  484.355711] netdevsim netdevsim517 eni517np1: renamed from eth1
[  484.446738] Could not find device with ifindex 2000 in netnsfd 11
[  484.446843] Could not find netns with fd: 2000
[  484.446896] Cannot link a netdevsim to itself
[  484.446959] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).