I wonder - does bind from NetBSD-current work on alpha? If so, we could look for fixes that are in the NetBSD tree. If not, you can report another bug for the base system ;) In general, I think this and the other bind (911/912) bug report would better be filed upstream.
bind from base works fine on all architectures. I've had to revert to bind from base on my ARM machines because no pkgsrc bind works there. I'm using bind from base on a few amd64 systems, too.
It seems that zone transfers from systems running bind914 hang, too. John