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Manager Unreachable

Symptoms

  • The page https://manager.diekasse.app or https://manager.diekassa.app does not load or stays stuck while loading.

  • However, a ping to the domain works.

  • When testing with curl -I https://manager.diekasse.app, the connection takes a very long time or aborts.

Cause

Our platform is reachable via IPv4 and IPv6.
Some internet connections signal IPv6 support but cannot establish a working IPv6 connection.
Browsers prefer IPv6 by default. If this connection fails, long wait times or a connection timeout occur, even though the IPv4 connection would actually work.

Quick Tests

  1. IPv4 test via cURLbash curl -4 -I https://manager.diekasse.app If you receive an immediate response (e.g. HTTP/2 200), the issue is most likely a broken or misconfigured IPv6 connection.

  2. Check the network path (traceroute / tracert)

  3. macOS / Linux:bash traceroute manager.diekasse.app Windows:```bash tracert manager.diekasse.app

4. With this information, our support team can quickly determine whether it is, in fact, a routing or ISP issue rather than an IPv6 problem.

### Solutions

1. **Repair IPv6**
2. Contact your internet provider and ask them to check or activate a working IPv6 connection.
3. Alternatively, you can ensure in your router or operating system that IPv6 is correctly set up.
4. **Temporarily disable IPv6**
5. On the individual computer or local network, you can disable IPv6 so that the browser uses IPv4 only.
6. This is a quick fix when an immediate correction via the provider is not possible.

### Why We Cannot Disable IPv6

Many of our customers already use functioning IPv6.  
To ensure the best possible reachability, IPv6 support remains active on our side.

### Summary

If `manager.diekasse.app` does not load for you despite a successful ping, in most cases this is due to a **missing or faulty IPv6 connection**.  
With the `curl -4`, `traceroute` or `tracert` commands, the issue can be quickly narrowed down and other possible causes can be specifically checked by support.