Dynamic DNS cached IP always resolves to 0.0.0.0 - What am I missing? 😕

[Liss]

Hello!

I have, what is probably a very simple question- I am trying to configure dynamic DNS, with DuckDNS. However, I have an issue where the cached IP is always 0.0.0.0.

Even after I manually hit "Save and Force Update" in the DDNS settings, it remains as 0.0.0.0. I am using a VPN (connected to Mulllvad, via WireGuard with a static IP), could that be the reason why it is not working?



I am very new to this, and I think that I've likely just missed out a step, but was unable to find a guide or any examples online. Sorry if this is quite a basic question, but I would be super grateful, if anyone could point me in the right direction- thank you very much in advance  ;D

This is what I have done so far:

Under Services --> Dynamic DNS, I added a new client.

I set the Service type to DuckDNS and interface to monitor to LAN, added in the hostname I registered through DuckDNS, and double-checked, and inserted my DuckDNS credentials.



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Next, under System --> Settings --> General --> Networking, I enabled "Allow DNS server list to be overridden by DHCP/PPP on WAN"



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I then went to System --> Settings --> Cron, and added a new job to update the IP for DuckDNS every morning, using the standard "Dynamic DNS Update" command



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Under Services --> DHCPv4 --> [LAN] --> Dynamic DNS, I left it as is, and did not Enable registration of DHCP client names in DNS



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My DuckDNS account currently shows the correct IP, and seems to all be in order



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Annoyingly, a while ago I did find a good tutorial, but the website is now down, and I can't fully remember all the content, and doesn't seem to be archived anywhere- I'm slapping myself for not downloading it!

Any suggestions, would be really appreciated- thank you very much in advance!

[Liss]

Any ideas would really help  :-*

[AhnHEL]

Interface to Monitor should be WAN not LAN.

[Liss]

Interface to Monitor should be WAN not LAN.

Thank you @AhnHEL - I feel dumb for not spotting that! Thank you very much for your help 🙌

[AhnHEL]

Glad you got it sorted.  ;)