On Sun 10 Apr 2022 at 09:31:59 -0400, gene heskett wrote: > On Sunday, 10 April 2022 08:54:07 EDT Brian wrote: > > On Sun 10 Apr 2022 at 05:46:35 -0400, gene heskett wrote: > > > > [...] > > > > > This, FWIW, has nothing to do with cups and printer sharing, cups > > > does > > > its own advertising. All printers here are attached to this machine, > > > marked as shareable and I can put stuff on their output trays from > > > any > > > machine including the rpi4 on my local network. > > > > Indeed, CUPS does do its own advertising of print queue and uses > > mDNS/DNS-SD. That is its *only* technique it has available for > > sharing the queues. > > > > mDNS/DNS-SD requires avahi-daemon to be active. Without it there > > isn't any sharing and advertising. > > > > So, I do not understand "...has nothing to do with...". > > > The avahi-daemon has either been removed by rm. or by chmod -x on all > machines here, yet cups shared printers (plural) can use those shared > printers just as if they were plugged into that machine. So IMO removing > or disabling avahi-daemon has nothing to do with cups sharing. > You are saying it won't work, but it does here. What else is there except > cups.
You can print from an rpi4 to a printer attached to another machine on the network. There are only two ways this can happen: * The rpi4 knows about the print server via mDNS/DNS-SD. * There is a manual queue set up on the rpi4. Only you can decide which it is. -- Brian.
