(failed)net::ERR_ADDRESS_UNREACHABLE while the same hostname works in browser

[Muzosh]

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• I have searched the issues tracker for a bug report similar to mine, in vain

Ferdium Version

7.0.0

What Operating System are you using?

macOS

Operating System Version

macOS Sequoia 15.1.1

What arch are you using?

arm64 (including Apple Silicon)

Last Known Working Ferdium version

No response

Expected Behavior

I'm using sslip.io to redirect their hostname to an IPv6 where I expect a specific web service.

When I type in https://2c03-853b-72e3-2b81--252b-a95b-e0fa.sslip.io:1234/ (IPv6 and port were randomized here) into my browser (tested on Safari and Mozzilla), the web service page get loaded up and I can interact with it. The service runs on public IPv6 (in this anonymized scenario that would be 2c03:853b:72e3:2b81::252b:a95b:e0fa).

Actual Behavior

When I create a service in Ferdium and give it the same address (i.e. https://2c03-853b-72e3-2b81--252b-a95b-e0fa.sslip.io:1234/):

.. then the page is blank even after multiple reloads and cache clearing.

Toogle Service Developer Tools shows me in the Network page an error: (failed)net::ERR_ADDRESS_UNREACHABLE.

Steps to reproduce

Not sure how, probably host some service on public IPv6 and use sslip.io to access it.

Debug link

No response

Screenshots

No response

Additional information

No response