libnss-db - 2.2.3pre1-6+b6 main

nss_db is a set of C library extensions which allow Berkeley Databases
to be used as a primary source of aliases, ethers, groups, hosts,
networks, protocol, users, RPCs, services, and shadow passwords (instead
of or in addition to using flat files or NIS). Install nss_db if your
flat name service files are too large and lookups are slow.