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Need additional documentation for UDM Pro SE #6

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absane opened this issue Apr 28, 2022 · 2 comments
Closed

Need additional documentation for UDM Pro SE #6

absane opened this issue Apr 28, 2022 · 2 comments

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@absane
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absane commented Apr 28, 2022

I found that the instructions provided here work as expected for the USG. However, when I replicated the steps for the UDM Pro SE (UnifFi OS 2.4.8, which is EA), DNS was not updating. To resolve it, I SSH'd into it and ran this command:

/usr/sbin/inadyn -n -C -f /run/ddns-eth8-inadyn.conf --no-pidfile -l debug

I found that the HTTP request it was making to Cloudflare was malformed because it was missing a leading folder path:

inadyn[20183]: Sending alias table update to DDNS server:

GET foobar.workers.dev HTTP/1.0
Host: foobar.workers.dev
Authorization: Basic foobar
User-Agent: inadyn/2.8.1 https://github.com/troglobit/inadyn/issues

inadyn[20183]: Successfully sent HTTPS request!
inadyn[20183]: Successfully received HTTPS response (316/8191 bytes)!
inadyn[20183]: DDNS server response: HTTP/1.1 400 Bad Request
Server: cloudflare
Date: Thu, 28 Apr 2022 16:22:43 GMT
Content-Type: text/html
Content-Length: 155
Connection: close
CF-RAY: -

<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>cloudflare</center>
</body>
</html>

Notice the malformed GET subdomain.domain.com HTTP/1.0

Long story short, thanks to this blog post, I found i needed to append /nic/update?hostname=%h&myip=%i at the end of the Server entry in the DDNS configuration. So, if your Server entry is subdomain.workers.dev, make it this: workers.dev/nic/update?hostname=%h&myip=%i.
@bwthor
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bwthor commented Apr 29, 2022

Thank you absane, this was driving me crazy that I couldn't get it to work on my Unifi Dream Router. Your modification of the server entry fixed it for the UDR as well.

@willswire
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Investigating these issues - in the meantime, the README.md has been updated. Please note I have modified the script to accept routes on /update?hostname=... instead of /nic/update.

@dhutchison dhutchison mentioned this issue May 8, 2022
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3 participants
@absane @bwthor @willswire