Force a DDNS Update and/or Display Status on either USG or EdgeRouter
Force a DDNS Update
To force a DDNS update, SSH into your USG or Edgerouter and type:
update dns dynamic interface {WAN IP}
For Example:
update dns dynamic interface eth0 (USG 3)
or
update dns dynamic interface eth2 (USG Pro)
To show the current status:
show dns dynamic status
which will show
interface : eth2 ip address : WAN IP host-name : unifi.example.com last update : Tue May 15 15:27:41 2018 update-status: good
NOTE:
host-name
should be your specific host