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unbound(8)			 unbound 1.5.8			    unbound(8)

NAME
       unbound - Unbound DNS validating	resolver 1.5.8.

SYNOPSIS
       unbound [-h] [-d] [-v] [-c cfgfile]

DESCRIPTION
       Unbound is a caching DNS	resolver.

       It  uses	a built	in list	of authoritative nameservers for the root zone
       (.), the	so called root hints.  On receiving a DNS query	 it  will  ask
       the root	nameservers for	an answer and will in almost all cases receive
       a delegation to a top level domain (TLD)	authoritative nameserver.   It
       will  then ask that nameserver for an answer.  It will recursively con-
       tinue until an answer is	found or no answer  is	available  (NXDOMAIN).
       For performance and efficiency reasons that answer is cached for	a cer-
       tain time (the answer's time-to-live or TTL).  A	second query  for  the
       same  name  will	 then be answered from the cache.  Unbound can also do
       DNSSEC validation.

       To use a	locally	running	Unbound	for resolving put

	     nameserver	127.0.0.1

       into resolv.conf(5).

       If authoritative	DNS is needed as well using nsd(8), careful  setup  is
       required	 because authoritative nameservers and resolvers are using the
       same port number	(53).

       The available options are:

       -h     Show the version and commandline option help.

       -c cfgfile
	      Set the config file with settings	for unbound to read instead of
	      reading  the  file  at  the  default  location, /var/unbound/un-
	      bound.conf. The syntax is	described in unbound.conf(5).

       -d     Debug flag: do not fork into the background, but	stay  attached
	      to  the  console.	  This flag will also delay writing to the log
	      file until the thread-spawn time,	so that	most config and	 setup
	      errors  appear  on  stderr. If given twice or more, logging does
	      not switch to the	log file or to syslog, but  the	 log  messages
	      are printed to stderr all	the time.

       -v     Increase verbosity. If given multiple times, more	information is
	      logged.  This is in addition to the verbosity (if	any) from  the
	      config file.

SEE ALSO
       unbound.conf(5),	unbound-checkconf(8), nsd(8).

AUTHORS
       Unbound	developers  are	mentioned in the CREDITS file in the distribu-
       tion.

NLnet Labs			 Mar  2, 2016			    unbound(8)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

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