Hey everyone! I'm facing an issue with a device that needs to connect to an online service, let's call it ABC`XYZ`com. Whenever it queries DNS servers (like 8.8.8.8 or 1.1.1.1), it receives a non-authoritative result, which the device just ignores and doesn't establish a connection. I've set up an on-site DNS record for ABC`XYZ`com to point to that non-authoritative result, so my device can finally use it.
Now, I'm looking for a way to have my DNS server automatically update this record if the hosted service changes its IP address. Essentially, I need a way to convert the non-authoritative responses into a format that my device will actually accept. Any tips or solutions? Thanks a lot!
4 Answers
You could also consider using a DDNS service if your DNS server supports it. Just make sure you’re able to do updates through your authoritative DNS server. Be cautious about hardcoding IPs since it can lead to issues down the line!
It sounds like your device is quite picky about needing authoritative answers, which isn't typical for most systems. Since your local DNS server is set up correctly, it works because it becomes authoritative for that zone. To keep the DNS record up to date, you could automate the process of checking the real IP and updating your DNS server's records. A scheduled task or cron job could be an easy solution for this!
Make sure you have an appropriate record in your public DNS as well. If it's not pointing to your device, the changes won't show up right away – sometimes it can take up to 48 hours for propagation.
It might be a good idea to log how often the IP actually changes. That way, you can gauge how frequently you need to update your DNS server.
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