For your convenience, the Solaris operating environment supplies a compiled version of Berkeley Internet Name Domain (BIND) version 8.1.2. In compiling this software, options and choices were made to meet the needs of the greatest number of sites. If this pre-compiled version of BIND does not meet your requirements, you can recompile your own version of BIND from the publicly available source code.
Default Domain Name. If the DNS domain name is not set in /etc/resolv.conf, or via the
LOCALDOMAIN environment variable, libresolv derives it from the NIS or NIS+ domain name provided that the /etc/nsswitch.conf file contains nisplus or nis as the first element in the hosts line.