---
name: "gdnsd-plugin-null"
section: "8"
platform: "linux"
package: "gdnsd"
version: "3.8.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/gdnsd-plugin-null"
---

# gdnsd-plugin-null(8)

gdnsd null plugin

## NAME

gdnsd-plugin-null - gdnsd null plugin

## SYNOPSIS

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
```

## DESCRIPTION

**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.  It always returns the IPv4 address `0.0.0.0` and the IPv6 address `"::"`.

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 anything.

## SEE ALSO

[**gdnsd.config**(5)](/gdnsd.config/5.md), [**gdnsd.zonefile**(5)](/gdnsd.zonefile/5.md), [**gdnsd**(8)](/gdnsd/8.md)

The gdnsd manual.

## COPYRIGHT AND LICENSE

Copyright (c) 2014 Brandon L Black \<blblack@gmail.com\>

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 \<http://www.gnu.org/licenses/\>.