[  479.001241] netdevsim netdevsim399 eni399np1: renamed from eth0
[  479.002310] netdevsim netdevsim631 eni631np1: renamed from eth0
[  479.088574] Could not find device with ifindex 2000 in netnsfd 11
[  479.088693] Could not find netns with fd: 2000
[  479.088747] Cannot link a netdevsim to itself
[  479.088810] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).