Visa Hankala <v...@hankala.org> wrote: > On Tue, Dec 29, 2020 at 05:01:27PM +0100, Florian Westphal wrote: > > This is suspicious. Is prefixlen == 0 impossible? > > > > If not, then after patch > > mask = ~0U << 32; > > > > ... and function returns 0. > > With prefixlen == 0, there is only one equivalence class, so > returning 0 seems reasonable to me.
Right, that seems reasonable indeed. > Is there a reason why the function has treated /0 prefix as /32 > with IPv4? IPv6 does not have this treatment. Not that I recall, looks like a bug.
