hey,
In other words: create undefined behaviour that breaks in new and exciting ways for every operating system (version) around.
No, it's not really different from having unexpired RAs around or manually adding two IPs to an interface. These situations already happen and operating systems deal with them.
Thus creating a situation where instead of DHCP "and" RA, you get an "exclusive or" to preserve your sanity. You might as well declare RA deprecated directly.
There is no need to deprecate RA at all. It is good for many usecases but not for IA_PD unfortunately.
-- tarko
