I've been playing with the 'network:/' and 'zeroconf:/' KIOs to discover Avahi services via Dolphin, and found that it does not work consistently as expected. Refreshing (with F5) sometimes helps with zeroconf:/, but not consistently. By contrast, I have found that using Gnome's Nautilus file manager does find the 'missing' remote shares consistently. I would like to know what the Dolphin KIOs are doing 'under the hood' that leads to the failure that I'm observing. I can get a 'complete' discovery output from 'avahi-browse -art' however, so I know all published services are present. Anyone else got any ideas or experience with this? It would be great to have it working properly.

Dolphin version 17.12.3
KDE Plasma 5.12.5
KDE Framework 5.45.0

This will certainly not help you, I'm just finding an exact misbehaviour of dolphin while nautilus browses avahi FTP shares seemlessly.

KDE Frameworks 5.49.0
Qt 5.11.1

and won't help me either.

a working line to enter in nautilus , by contrast, would be more helpful.

such as

zeroconf:/127.0.0.1

did not get me anywhere with nautilus nor dolphin

of course, we need confirmed working stuff.

Just checked with Dolphin 18.12.0, KDE Frameworks 5.53.0, Qt 5.12.0 :

It's just working magically !

Thanks for the update. That's good to know. FWIW, I'd like to see the Dolphin 'network:/' KIO utilize Avahi discovery a little more comprehensively. It could report a GUI version of 'avahi-browse -art' to report Avahi-published services offered by hosts on the LAN.