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CUPS Airprint/Bonjour discovery not working #508

Description

@chrowe

Server: HA 17.1 on Raspberry Pi 4
Client: MacOS 15.7.4 on M1 MacBook Pro

I followed the steps in the readme and I am able to get the printer working (prints a test page from the CUPS web UI) as well as configure the printer manually via the Add Printer > IP settings in MacOS using either AirPrint or IPP but it is not showing up in the "Default" list when adding a printer or in the print dialog without setup.

Looking at the log file

1e14b3fb_cups_2026-03-16T00-45-48.688Z.log

there seem to maybe some issues, like
No service file found in /etc/avahi/services.
*** WARNING: Detected another IPv4 mDNS stack running on this host. This makes mDNS unreliable and is thus not recommended. ***

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