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my versions: cups-1.5.4-12.4.1.x86_64
I have a setup where there is a opensuse printer server that share printers via cups.
In OpenSuSE 13.1 is systemd that listen to cups socket and in some manner give control to cups service... (where can I find some documentation of this architecture ?)
I have many problems with this approach:
SERVER SIDE (I obviously configured cupsd.conf to accept external connections and remote announcing of printing spool and configured SuSEfirewall2 not to block requests from the outside)
============

cups socket listen only to localhost infact original /usr/lib/systemd/system/cups.socket is:
[Unit]
Description=CUPS Printing Service Sockets

[Socket]
ListenStream=/var/run/cups/cups.sock
ListenStream=127.0.0.1:631
ListenStream=[::1]:631
ListenDatagram=127.0.0.1:631
ListenDatagram=[::1]:631
BindIPv6Only=ipv6-only

[Install]
WantedBy=sockets.target

so it is impossible to print from outside this server because all the configurations managed by utilities are for /etc/cups/cupsd.conf

I solved this commenting out all the ListenDatagram and ListenStream and adding:

ListenDatagram=631
ListenStream=631

so:
systemctl daemon-reload
systemctl stop cups.service
systemctl stop cups.socket
systemctl start cups.socket
systemctl start cups.service

did the job.

CLIENT SIDE (I obviously configured cupsd.conf to browse the network for printers)
===========

Here there is the Evil, as if I configure the cups.socket like server side, relaunch daemons, I can see a process: cups-polld that seem to scan the network (but I cannot see any packet exit from the box) so I solved removing the dependency for cups.socket and starting only the systemd units:
cups.path e cups.service

without cups.socket printer is correctly imported and I can print.




Reproducible: Always

Steps to Reproduce:
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