here is a patch that allows CIDR netmasks in pg_hba.conf. It allows two
address/mask forms:
. address/maskbits, or
. address netmask (as now)
If the patch is accepted I will submit a documentation patch to cover it.
This is submitted by agreement with Kurt Roeckx, who has worked on a patch
that covers this and other IPv6 issues.
cheers
andrew