[  486.695394] netdevsim netdevsim397 eni397np1: renamed from eth0
[  486.796209] netdevsim netdevsim709 eni709np1: renamed from eth1
[  487.156997] Could not find device with ifindex 2000 in netnsfd 11
[  487.157167] Could not find netns with fd: 2000
[  487.157256] Cannot link a netdevsim to itself
[  487.157373] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).