DynDNS Configuration with DietPi - Error

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version
    G_DIETPI_VERSION_CORE=9
    G_DIETPI_VERSION_SUB=11
    G_DIETPI_VERSION_RC=2
    G_GITBRANCH=‘master’
    G_GITOWNER=‘MichaIng’
  • Distro version
    bookworm
  • Kernel version
    Linux VPN 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
  • Architecture
    amd64
  • SBC model | echo $G_HW_MODEL_NAME or (EG: RPi3)
    Virtual Machine (x86_64)
root@VPN:~# dietpi-ddns
[  OK  ] DietPi-DDNS | Removing DietPi-DDNS UNIX user
[ INFO ] DietPi-DDNS | Preparing unprivileged DietPi-DDNS UNIX group ...
[  OK  ] DietPi-DDNS | groupadd -r -p ! dietpi-ddns
[ INFO ] DietPi-DDNS | Preparing unprivileged DietPi-DDNS UNIX user ...
[  OK  ] DietPi-DDNS | useradd -r -g dietpi-ddns -G  -d /nonexistent -s /usr/sbin/nologin -p ! dietpi-ddns
[ INFO ] DietPi-DDNS | Testing DDNS update ...
[FAILED] DietPi-DDNS | DDNS update test failed, please check your input:
curl: (7) Failed to connect to ipv64.net port 443 after 3076 ms: Couldn't connect to server
root@VPN:~#

What could be the reason for this error?

Best regards
Jürgen

2

looks like this site is not reachable for you. Could be something blocking access. A firewall, or ISP. You can try ping ipv64.net to check if this at least is working.

3

And how can I solve the error?

Failed to connect to ipv64.net port 443

4

did you tried to ping? Not sure if you have an active VPN client running?

5

ping google.com works

6

Yes, it works.
I do not have an active VPN client

7

I mean did you tried to pingipv64.net?

8

Yes it works

9

is following working

curl -I https://ipv64.net

10 
root@VPN:~# curl -I https://ipv64.net
HTTP/2 200
expires: Thu, 19 Nov 1981 08:52:00 GMT
cache-control: no-store, no-cache, must-revalidate
pragma: no-cache
set-cookie: PHPSESSID=r4lguk1j4kgkrnr37bk3v8dfq1; path=/; secure; HttpOnly
x-frame-options: deny
strict-transport-security: max-age=31536000; preload
permissions-policy: geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(),magnetometer=(),gyroscope=(),fullscreen=(self),payment=()
vary: Accept-Encoding
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
x-permitted-cross-domain-policies: none
referrer-policy: no-referrer
content-type: text/html; charset=UTF-8
date: Thu, 27 Feb 2025 14:58:05 GMT
server: Apache
11

that looks like access to this site is working without issue. Are you able to check DDNS configuration again?

12

Unfortunately, I always get the same error

When I enter the domain update URL in the browser, I receive a positive response

image
image860×121 6.86 KB

13

image
image1427×380 19.9 KB

If it only says “IPV6”, then it has now worked :slight_smile:

14

It seems that you are dual stack (both IPv4 and IPv6) and IPv6 has priority.
curl needs to run with -4 option to force IPv4.

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