The following statements are for the resolver configuration file, /etc/resolv.conf.
Defines your resolver's default domain
domaindomain-name
domain corp.hp.com
Defines your resolver's default domain and search list
searchdefault-domain
next-domain-in-search-list
...last-domain- in-search-list
search corp.hp.com pa.itc.hp.com hp.com
Tells your resolver to query a particular name server
nameserverIP-address
nameserver 15.255.152.4
;free-format-comment
or
#free-format-comment
# Added parent domain to search list for compatibility with 4.8.3
Specifies network numbers for your resolver to prefer
sortlistnetwork-list
sortlist 128.32.4.0/255.255.255.0 15.0.0.0
Turns on debugging output in the resolver
options debug
options debug