The different configuration options are:
nameserver address
This specifies the Internet address (in dot notation)
of a name server that the resolver should query. Up to
3 name servers may be listed, one per keyword. If
there are multiple servers, the resolver queries them
in the order listed. When a query to a name server on
the list times out, the resolver will move to the next
one until it gets to the bottom of the list. It will
then restart from the top retrying all the name servers
until a maximum number of retries are made.
search domain-list
This specifies the search list for host-name lookup.
The search list is normally determined from the local
domain name; by default, it begins with the local
domain name, then successive parent domains that have
at least two components in their names. This may be
changed by listing the desired domain search path following
the search keyword with spaces or tabs separating
the names. Most resolver queries will be attempted
using each component of the search path in turn until a
match is found. Note that this process may be slow and
will generate a lot of network traffic if the servers
for the listed domains are not local, and that queries
will time out if no server is available for one of the
domains.
The search list is currently limited to six domains with a total of 256 characters.
The keyword and value must appear on a single line, and the keyword (e.g. nameserver) must start the line. The value follows the keyword, separated by white space.