Provided by: gdnsd_2.2.0-1ubuntu1_amd64 bug


       gdnsd-plugin-null - gdnsd null plugin


       Example null service_types config:

         service_types => {
           my_null_mon => {
             plugin => null,
             # ... other generic service_type params

       Zonefile RRs using null resolution

         foo 300 DYNA null
         bar 300 DYNC null!whatever


       gdnsd-plugin-null exists mostly as an example of the minimum possible plugin of both
       types.  It is simultaneously both a monitoring plugin and a resolution plugin.

       When used as a resolution plugin in "DNYA" or "DYNC" RRs, it ignores any resource name
       provided.  With "DYNA" it always returns the IPv4 address and the IPv6 address
       "::".  With "DYNC" it always returns a CNAME to to the domainname "invalid."

       When used as a monitoring plugin by defining a service_type as shown in the example above
       it emulates the behavior of a real monitoring plugin (updating at correct intervals, etc)
       but sends a "DOWN" result at every monitoring check interval without actually checking


       gdnsd.config(5), gdnsd.zonefile(5), gdnsd(8)

       The gdnsd manual.


       Copyright (c) 2014 Brandon L Black <>

       This file is part of gdnsd.

       gdnsd is free software: you can redistribute it and/or modify it under the terms of the
       GNU General Public License as published by the Free Software Foundation, either version 3
       of the License, or (at your option) any later version.

       gdnsd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
       even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
       GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with gdnsd.  If
       not, see <>.