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I see that the current Raw Hide has an LPRng package, which makes me suspect that you're going to drop your lpr package in favor of LPRng in the next RedHat release. If you do decide to drop lpr completely, you should know that netatalk printing through papd doesn't work with LPRng. I have netatalk patches to make it sort of work, but they do not provide the full functionality that is available when netatalk is used with lpr. I can send you the patches if you're interested in them.
We're going to replace lpr with LPRng and keep shipping lpr in Powertools for people who need it. I'm definitely interested in seeing your patch.
Created attachment 778 [details] patch (old, perhaps no longer completely correct) patch for netatalk + lprng
I've attached my patch. Note that you need to make sure LPRNG is defined when you compile netatalk, or the patch won't do anything. Note also that I haven't done anything with this patch in a long time, so I do not know if it is still current. Finally, note that I never implemented viewing the queue or removing jobs from the queue via PAP with LPRNG -- those bits of functionality were never important enough to me to be worth implementing. But for printing jobs, I found that this patch worked just fine with lprng.
I'm reseting this to an enhancement, as we don't even ship any apple talk tools at the moment, but I've rebuilt the printconf system to the point where adding this back in is not that hard.