Re: IPv6 address insertion order (was Re: [PATCH net v2] Revert "ipv6: preserve insertion order for same-scope addresses")

On Tue, Jun 02, 2026 at 04:44:19PM +1000, David Gibson wrote:

I get the impression there's a rough consensus that the best we can do
now is revert this change (already done), and make a new patch which
changes the insertion order to the "correct" one conditional on a new
flag.

Stefano has enough other fires to fight, so I'm taking a look at
implementing that.  Some initial thoughts, that I'm soliciting
feedback on:

I've only been partially reading along...

Are we talking about RTM_NEWADDR?

I've never worked on the code dealing with addresses. But in general,
if you want to add new functionality to a netlink message, you add a
new attribute to the message.

https://elixir.bootlin.com/linux/v7.0.10/source/include/uapi/linux/if_addr.h#L26

	Andrew