Reverse DNS with Autodiscovery didn't work

I followed to autodiscover few of my devices. I properly maintained PTR records for devices within the network to be autodiscovered. But host were added by IP rather dns name though reverse lookup was available in shell.

Please read over the discovery methods

Discovery Methods

Below are the methods for auto discovering devices. Each one can be enabled or disabled and may have additional configuration options.


Disabled by default.

Adds devices that are listed in another device’s arp table. This module depends on the arp-table module being enabled and returning data.

To enable, switch on globally the $config['discovery_modules']['discovery-arp'] = true; or per device within the Modules section.


Enabled by default.

$config['autodiscovery']['xdp'] = false; to disable.

This includes FDP, CDP and LLDP support based on the device type.

The LLDP/xDP links with neighbours will always be discovered as soon as the discovery module is enabled. However, LibreNMS will only try to add the new devices discovered with LLDP/xDP if $config['autodiscovery']['xdp'] = true ;

Hi Kevin
Devices were discovered and were added with IP only though PTR were maintained properly.
$ dig -x
returns proper record.