[  521.613167] netdevsim netdevsim539 eni539np1: renamed from eth1
[  521.709620] netdevsim netdevsim385 eni385np1: renamed from eth0
[  521.919701] Could not find device with ifindex 2000 in netnsfd 11
[  521.919893] Could not find netns with fd: 2000
[  521.920005] Cannot link a netdevsim to itself
[  521.920123] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).