[  479.752226] netdevsim netdevsim331 eni331np1: renamed from eth0
[  479.752659] netdevsim netdevsim631 eni631np1: renamed from eth1
[  479.840449] Could not find device with ifindex 2000 in netnsfd 11
[  479.840565] Could not find netns with fd: 2000
[  479.840622] Cannot link a netdevsim to itself
[  479.840683] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).