ddns-scripts: ydns.io HTTP400 with wget, works with cURL

Package Name

ddns-scripts

Maintainer

@feckert

OpenWrt Version

OpenWrt 24.10.3 (r28872-daca7c049b)

OpenWrt Target/Subtarget

ath79/nand

Steps to Reproduce

1. Have an ydns.io account,
2. configure DDNS at their site and on the OpenWRT side with the API credentials,
3. run
4. YDNS won't start claiming HTTP400 error.

Actual Behaviour

Log excerpt:

 104024       : https://*user*:*password*@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209:
2025-11-08 10:40:24 ERROR 400: Bad Request.
 104024  WARN : Transfer failed - retry 8/0 in 60 seconds
 104124       : #> /usr/bin/wget --hsts-file=/tmp/.wget-hsts -nv -t 1 -O /var/run/ddns/YDNS_0.dat -o /var/run/ddns/YDNS_0.err --no-proxy 'https://*user*:***PW***@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209'
 104127 ERROR : GNU Wget Error: '8'
 104127       : https://*user*:*password*@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209:
2025-11-08 10:41:26 ERROR 400: Bad Request.
 104127  WARN : Transfer failed - retry 9/0 in 60 seconds
 104227       : #> /usr/bin/wget --hsts-file=/tmp/.wget-hsts -nv -t 1 -O /var/run/ddns/YDNS_0.dat -o /var/run/ddns/YDNS_0.err --no-proxy 'https://*user*:***PW***@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209'
 104229 ERROR : GNU Wget Error: '8'
 104229       : https://*user*:*password*@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209:
2025-11-08 10:42:29 ERROR 400: Bad Request.
 104230  WARN : Transfer failed - retry 10/0 in 60 seconds

Manually running WGET vs cURL:

root@AP4040:~# curl 'https://*user*:*password@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209' ; echo
nochg 92.140.226.209
root@AP4040:~# wget 'https://*user*:*password@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209' ; echo
--2025-11-08 10:40:18--  https://*user*:*password*@ydns.io/api/v1/update/?host=dzw.ydns.eu&ip=92.140.226.209
Resolving ydns.io... 217.115.6.75, 2a00:1328:e000:504::1:108
Connecting to ydns.io|217.115.6.75|:443... connected.
HTTP request sent, awaiting response... 400 Bad Request
2025-11-08 10:40:20 ERROR 400: Bad Request.

Confirmation Checklist

• The package is maintained in this repository.
• I understand that issues related to the base OpenWrt repository or LuCI repository will be closed.
• I am reporting an issue for OpenWrt, not an unsupported fork.

Inspect the ddns-scripts path that builds the ydns.io update request and compare its wget invocation with the working curl command shown in the report. Reproduce both requests using the supplied ydns.io endpoint; done when the package's update request is accepted instead of returning HTTP 400.