Hi again list, As I mentioned here before, I went from a partially-upgraded testing (a progress from KDE 5 to 6) to a newly-installed one. One thing I had a problem restoring is the auto-detected network printer.
Now, those of you who read https://wiki.debian.org/Plasma%206 carefully might already guess what the problem was, and you'd be mostly correct: The main issue was that network printer autodetection depends on mdns which is, well, a network service, and the newly installed firewall blocks those. So I figured it out, added a rule for mdns, and sailed on. But it made me think: I am a relatively sophisticated user. The whole point of mdns is for things to work "out of the box". The rules I had on by default were to allow incoming ssh and dhcpv6 (not sure if it's because I picked the "SSH Server" component in installation). Shouldn't we allow mdns in by default? Thanks for your attention, Shai.
