Change the options that affect lookup operations.

   The current options are displayed with `set all' or `set ALL'.

   FORMAT:
    set keyword[=value]

   OPTIONS:
    all, debug, d2, defname, recurse, vc, domain, search, srchlist,
    root, retry, timeout, querytype, type, class, ignoretc

1  –  all

   Displays the current values of the nslookup options and
   information about the current default server.

   set ALL also prints the server state information.

   FORMAT:
    set all  or  set ALL

2  –  debug

   Turns on debugging mode.  Verbose information is printed
   about the packet sent to the server and the resulting answer.

   FORMAT:
    set [no]debug

   DEFAULT:
    set nodebug

3  –  d2

   Turns on exhaustive debugging mode.

   FORMAT:
    set [no]d2

   DEFAULT:
    set nod2

4  –  defname

   Appends the default domain name to every lookup.

   FORMAT:
    set [no]defname

   DEFAULT:
    set nodefname

5  –  recurse

   Tells the BIND/Hesiod server to query other servers if it
   does not have the information.

   FORMAT:
    set [no]recurse

   DEFAULT:
    set recurse

6  –  vc

   Uses a TCP connection when sending requests to the server.

   FORMAT:
    set [no]vc

   DEFAULT:
    set novc

7  –  domain

   Changes the default domain to the domain name specified.
   The default domain name is appended to all lookup
   requests if the defname option is set.

   FORMAT:
    set domain=name

   DEFAULT:
    set domain=<domain of the current node>

8  –  search

   If a lookup request contains at least one period but doesn't
   end with a trailing period, append the domain manes in the
   domain search list until an answer is received.

   FORMAT:
    set [no]search

   DEFAULT:
    set search

9  –  srchlist

   Changes the set of domains that are searched if a name is
   not found in the default domain.

   FORMAT:
    set srchlist=N1[/N2[/N3[/N4[/N5[/N6]]]]]

   The default search list is the domain of the current node, and
   up to two successive parent domains up to the root.

10  –  root

   Changes the name of the root server to the host name
   specified.  This affects the root command.

   FORMAT:
    set root=host

   DEFAULT:
    set root=ns.nic.ddn.mil

11  –  retry

   Sets the number of retries to the number specified.
   If a reply to a request is not received within a certain
   amount of time (changed with set timeout), the request is
   resent. The retry value controls how many times a request
   is to be resent before giving up.

   FORMAT:
    set retry=number

   DEFAULT:
    set retry=2

12  –  timeout

   Changes the time-out interval for waiting for a reply to
   the number specified (in seconds).

   FORMAT:
    set timeout=number

   DEFAULT:
    set timeout=10

13  –  querytype

   Changes the type of information returned from a query.

   FORMAT:
    set querytype=value

   Allowed values are:

        ANY       Matches any type

        A         Internet address

        AAAA      IPv6 internet address

        CNAME     Canonical name for an alias

        HINFO     Host information

        MX        Mail routing information

        PX        X.400 mail mapping

        NAPTR     Naming authority pointer

        NS        Authoritative name server

        NSAP      NSAP address

        PTR       Domain name pointer

        SOA       Start of authority zone

        SRV       Server Selection

        TXT       Text strings

        WKS       A well known service

   DEFAULT:
    set querytype=A

14  –  type

   A synonym for querytype.

15  –  class

   Changes the class of information returned from a query.

   FORMAT:
    set class=value

   Allowed values are:

        IN        Internet

        HS        Hesiod

        ANY       any

   DEFAULT:
    set class=IN

16  –  ignoretc

   Ignore packet truncation errors.

   FORMAT:
    set [no]ignoretc

   DEFAULT:
    set noignoretc