(From the isc.org bind 9 pages) Some of the programs in the BIND 9 distribution have man pages under the doc/man directory. In particular, the command line options of "named" are documented in doc/man/bind/named.8. There is now also a set of man pages for the lwres library. The man pages are currently not installed automatically by "make install". -- Man pages should be installed if they're available.
Fixed in 9.1.0-2