Here is the DHCP lease details Issue is seen for the hostnames: standaloneregr-thing-2.standalonemonitor.io (has a fixed mac addr) estrace.standalonemonitor.io thingworx.standalonemonitor.io However when we attached a new device , the records are updated correctly. Issue is not seen for hostnames: thingworx1.standalonemonitor.io =========================================== DHCP Lease details =========================================== dhcp=> select * from lease4; address | hwaddr | client_id | valid_lifetime | expire | subnet_id | fqdn_fwd | fqdn_rev | hostname | state | user_context -----------+----------------+------------------------+----------------+------------------------+-----------+----------+----------+------------ ---------------------------------+-------+-------------- 181207063 | \xfa163e4a21c6 | \x | 4000 | 2020-08-28 12:18:38+00 | 1 | t | t | standaloner egr-thing-2.standalonemonitor.io | 0 | 181207062 | \x3a9d82d93fef | \x65737472616365 | 4000 | 2020-08-28 12:20:00+00 | 1 | t | t | estrace.sta ndalonemonitor.io | 0 | 181207061 | \x822fa2ef183a | \x7468696e67776f7278 | 4000 | 2020-08-28 12:20:00+00 | 1 | t | t | thingworx.s tandalonemonitor.io | 0 | 181207060 | \x1a46003cb83c | \x7468696e67776f727831 | 4000 | 2020-08-28 12:30:31+00 | 1 | t | t | thingworx1. standalonemonitor.io | 0 | (4 rows) dhcp=> \q ================================== DNS records: ================================= psql (12.3) Type "help" for help. pdns=> select * from records; id | domain_id | name | type | content | ttl | prio | change_date | disabled | ordername | auth ----+-----------+---------------------------------+-------+----------------------------------------------------------------------------------+ ------+------+-------------+----------+-----------+------ 2 | 1 | standalonemonitor.io | NS | qa-net | 3600 | 0 | | f | | t 4 | 2 | 10.in-addr.arpa | NS | qa-reverse-dns | 3600 | 0 | | f | | t 20 | 2 | 205.10.in-addr.arpa | | | | | | f | | t 21 | 2 | 0.205.10.in-addr.arpa | | | | | | f | | t 25 | 1 | estrace.standalonemonitor.io | DHCID | AAEBr63xr4bBvmVAVl7aQo+eZLOkZKqX18m6vwZ4ROueX1E= | 4000 | 0 | | f | | t 27 | 2 | 22.0.205.10.in-addr.arpa | PTR | estrace.standalonemonitor.io | 4000 | 0 | | f | | t 28 | 2 | 22.0.205.10.in-addr.arpa | DHCID | AAEBr63xr4bBvmVAVl7aQo+eZLOkZKqX18m6vwZ4ROueX1E= | 4000 | 0 | | f | | t 43 | 1 | thingworx1.standalonemonitor.io | A | 10.205.0.20 | 4000 | 0 | | f | | t 44 | 1 | thingworx1.standalonemonitor.io | DHCID | AAEBSSXLWVg5qtUlilby1gN/KPNfp8kThbPxTI1mcXGcyrk= | 4000 | 0 | | f | | t 45 | 1 | standalonemonitor.io | SOA | qa-net. help@abc.io. 2020082806 10800 300 604800 38400 | 3600 | 0 | | f | | t 46 | 2 | 20.0.205.10.in-addr.arpa | PTR | thingworx1.standalonemonitor.io | 4000 | 0 | | f | | t 47 | 2 | 20.0.205.10.in-addr.arpa | DHCID | AAEBSSXLWVg5qtUlilby1gN/KPNfp8kThbPxTI1mcXGcyrk= | 4000 | 0 | | f | | t 48 | 2 | 10.in-addr.arpa | SOA | qa-reverse-dns. help@abc.io. 2020082803 10800 300 604800 38400 | 3600 | 0 | | f | | t (13 rows) pdns=>