Comment 1 for bug 1945225

> udev can produce unpredictable network interface names by default when multiple devices map to the same slot due to an intermediate bridge.

so, if I understand it right, the MR won't actually fix this for anyone without additional per-system work, right? specifically, any system with this problem will need to also add the 'net.naming-scheme=latest' boot parameter (or set it via systemd-udevd env var).

If that's the case, then it seems like a much simpler manual workaround for this would be to just avoid slot naming for the problematic nics, for example by dropping a link file into /etc/systemd/network/ with content like:

[Match]
Driver="whatever driver the DGX nics use, or use some other specific match"

[Link]
NamePolicy=keep kernel database onboard path
AlternativeNamesPolicy=database onboard path
MACAddressPolicy=persistent

essentially, override the 99-default.link to remove 'slot' naming.

> While MAAS does take care to always restore the names used during commissioning (eth3 will always be the same NIC on every deploy), these names can change each time the system is commissioned.

if the only change needed is during maas comissioning, that seems like the perfect time to use a link file to override the specific problematic nics by whatever matching logic is best.