[  472.685370] netdevsim netdevsim399 eni399np1: renamed from eth0
[  472.685959] netdevsim netdevsim684 eni684np1: renamed from eth1
[  472.762281] Could not find device with ifindex 2000 in netnsfd 11
[  472.762353] Could not find netns with fd: 2000
[  472.762395] Cannot link a netdevsim to itself
[  472.762444] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).