Re: [PATCH net v2] Revert "ipv6: preserve insertion order for same-scope addresses"

On 6/1/26 16:01, Íñigo Huguet wrote:

As I said, this solution would break a few programs like
NetworkManager

FWIW, that is not allowed in the Linux kernel; see

https://www.kernel.org/doc/html/latest/process/handling-regressions.html#on-situations-where-updating-something-in-userspace-can-resolve-regressions

and other sections on that page.

As mentioned earlier, there are nevertheless solutions for this kind of
problems, but they are all somewhat ugly -- like some bit in /proc/ a
fixed NetworkManager could flip at boot time, as then everything will
continue to work for those that update the kernel without updating
NetworkManager.

Ciao, Thorsten