Maintainers for bind9 are Debian DNS Packaging <pkg-dns-devel@lists.alioth.debian.org>.
You may want to refer to the following individual bug pages: bind9-doc, bind9-host, bind9utils, dnsutils, host, libbind-dev, libbind-export-dev, libbind9-140, libbind9-160, libbind9-80, libbind9-90, libdns-export100, libdns-export162, libdns-export169, libdns100, libdns162, libdns169, libdns88, libirs-export141, libirs-export160, libirs-export91, libirs141, libirs160, libisc-export160, libisc-export166, libisc-export95, libisc160, libisc166, libisc84, libisc95, libisccc-export140, libisccc-export160, libisccc140, libisccc160, libisccc80, libisccc90, libisccfg-export140, libisccfg-export160, libisccfg-export90, libisccfg140, libisccfg160, libisccfg82, libisccfg90, liblwres141, liblwres160, liblwres80, liblwres90, lwresd.
You might like to refer to the bind9 package page, or to the Package Tracking System.
If you find a bug not listed here, please report it.