[Pkg-xen-devel] Bug#1042842: network interface names wrong in domU (>10 interfaces)

[Valentin Kleibel]

> I posted on xen-devel, you can follow from :
> https://lists.xenproject.org/archives/html/xen-devel/2023-08/msg00244.html
> (Unfortunately, the formatting is weird via html, split the IRC part on 
> "- ").

Thank you for posting upstream.

> Note that, at first sight, I was told this seems "not-a-Xen" bug (read 
> the IRC excerpts).
All documentation i found found on the Xen wiki suggests that interfaces 
are connected vifX.Y <-> ethY. [0] [1]
The only other way i know of for identifying the interfaces are MAC 
Addresses which can be randomly assigned if you don't configure them.

I also checked which net_ids udev knows about and the only things that 
pop up are:
ID_NET_NAMING_SCHEME=v247
ID_NET_NAME_MAC=enx00163efd832b
ID_OUI_FROM_DATABASE=Xensource, Inc.

Either i am missing the way you're supposed to do this, or there is a 
bug somewhere in the toolchain.
Unfortunately i'm not able to pinpoint the source of the issue, any help 
would be appreciated.

Valentin

[0] 
https://wiki.xenproject.org/wiki/Xen_Networking#Paravirtualised_Network_Devices
[1] 
https://wiki.xenproject.org/wiki/Network_Throughput_and_Performance_Guide#Technical_Overview