I do have an Interface with PPPoE which gets an IP from my ISP.
On this Interface, there is also a secondary IP to manage my Modem behind this Interface.
Before the transition to v18 EAP DDNS was alway updated correctly with the IP the PPPoE Interface got from my ISP.
After the transition DDNS is sometimes updated with the Public IP and sometimes with the alternative IP of the Network between XG and the Modem.
Additionally when I choose not to update DDNS with the IP of the Interface but with the NATed Public IP I only get an unknown error in the log and DDNS in not updated at all.
That looks very strange to me. Question now is, when a Interface that's used for DDNS has multiple IPs, can be chosen which one is to be used or should alway the primary IP be used and why is the setting to "Use Public NATed IP" not working at all?
