How can I disable listing Avahi discovered printers while still allowing to use static printers that use mDNS/DNS-SD addresses?

[tvogel]

I am facing issues in a scenario where I have set up a printer statically, including a specific PPD and using a .local address. CUPS clients (Firefox or the Gnome printer panel) still list two more instances of the same printer (no idea why) that do not autoconfigure correctly and are thus useless.

So, I wanted to turn off auto-discovery. Disabling cups-browsed does not help because listing printers is nowadays actually handled in the client-library as I learned. Disabling avahi-daemon also makes it impossible for CUPS to connect to the printer.
So, the known workarounds are exhausted and for me, it seems like disabling AVAHI browsing for listing printers while still allowing to resolve .local names in libcups would be the optimal solutions.

I briefly skimmed through the source code but couldn't find branches that would skip the browsing. It would be really cool if one of you CUPS experts could give me a hint on this issue.

[michaelrsweet]

Currently there is no way to disable DNS-SD discovery of printers. There is some discussion of supporting printer profiles and controlling which domains get browsed, but that code hasn't yet been integrated into libcups or CUPS 2.x.