ltm rule command DNS log

iRule(1)		      BIG-IP TMSH Manual		      iRule(1)



DNS::log
       Controls log publisher in DNS log profile.

SYNOPSIS
       DNS::log (MESSAGE)?

DESCRIPTION
       There are two version of this command.  DNS::log by itself returns a
       boolean indicating whether a DNS Logging Profile is configured in the
       DNS profile.  DNS::log with an argument logs a message to that log
       publisher.

       Syntax

	   DNS::log
	       * Returns a boolean indicating whether a DNS Logging Profile is configured in the DNS profile.

	   DNS::log []
	       * Logs a message to the DNS log publisher

RETURN VALUE
VALID DURING
EXAMPLES
	# Send one or more IP addresses for a response to an A query
	# Use on an LTM virtual server with a DNS profile enabled
	when DNS_REQUEST {
	    # Log query details
	    DNS::log "DNS question name: [DNS::question name],
		DNS question class: [DNS::question class],
		DNS question type: [DNS::question type]"

	    # Generate an answer with two A records
	    DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.1"
	    DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.2"
	    # Stop further processing of the query after this iRule and send the answer to the client
	    DNS::return
	    return
	}

HINTS
SEE ALSO
CHANGE LOG
       @BIGIP-11.3.0 --First introduced the command.



BIG-IP				  2017-01-31			      iRule(1)