Bad authentication #225

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saavagebueno · 2025-11-20T04:21:42-05:00

saavagebueno commented

2025-11-20 04:21:42 -05:00

Originally created by @flixxx on GitHub (Oct 25, 2022).

Discussed in https://github.com/qdm12/ddns-updater/discussions/385

^{Originally posted by flixxx October 24, 2022}
Trying to setup ddns-updater with my provider dynu
logs pulls the right info (current ip, ip logged on their site, domain, etc..)
when it comes time to update it, the following error;
ERROR bad authentication

I tried using my password, ip updater password, md5 hashed password.

Originally created by @flixxx on GitHub (Oct 25, 2022). ### Discussed in https://github.com/qdm12/ddns-updater/discussions/385 <div type='discussions-op-text'> <sup>Originally posted by **flixxx** October 24, 2022</sup> Trying to setup ddns-updater with my provider dynu logs pulls the right info (current ip, ip logged on their site, domain, etc..) when it comes time to update it, the following error; ERROR bad authentication I tried using my password, ip updater password, md5 hashed password. </div>

saavagebueno closed this issue

2025-11-20 04:21:42 -05:00

saavagebueno commented

2025-11-20 04:21:43 -05:00

@JackTalisker commented on GitHub (Dec 3, 2022):

Same problem
Debug posted at #385

@JackTalisker commented on GitHub (Dec 3, 2022): Same problem Debug posted at #385

saavagebueno commented

2025-11-20 04:21:43 -05:00

@qdm12 commented on GitHub (Jan 9, 2023):

A bit confusing from their documentation: https://www.dynu.com/en-US/DynamicDNS/IP-Update-Protocol

Basically you can use hostname=subdomain.domain.com but they also have a section on alias/subdomain saying to use alias=subdomain and hostname. The fix as @JackTalisker suggests in #385 is to just use hostname=subdomain.domain.com and not alias.

Anyway fixed it in the latest image to use only hostname and not alias.

@qdm12 commented on GitHub (Jan 9, 2023): A bit confusing from their documentation: https://www.dynu.com/en-US/DynamicDNS/IP-Update-Protocol Basically you can use `hostname=subdomain.domain.com` but they also have a section on *alias/subdomain* saying to use `alias=subdomain` and hostname. The fix as @JackTalisker suggests in #385 is to just use `hostname=subdomain.domain.com` and not `alias`. Anyway fixed it in the latest image to use only `hostname` and not `alias`.

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Reference: starred/ddns-updater#225