so far I had my SCX-3400 connected via USB to my ubuntu 18.04.3. Everything was fine via USB: scanning as well as printing.
Kids and wife asked to use the MFP via network, so I bought a TP-Link PS310U, connected it to the MFP and the router. Printing works. Simple Scan however, doesn't find any device. The MFP has the following address: dnssd://Samsung%20Electronics%20Co.,%20Ltd.%20SCX-3400%20Series-20dfdf._printer._tcp.local/
I run netdiscovery, but couldn't find it:
pasqualino@Asus:~$ /opt/Samsung/mfp/bin/netdiscovery -all --scanner
# DEBUG: Network printers discovery utility
My installed suld packages are:
suld-driver-3.00.65 (version 3.00.65-4)
suld-network-2 (version 4.00.39-2)
suld-ppd-1 (version 4.00.39-2)
What can I do? Should I try the network-1 package?
Have you tried the suggestions in issue 11 for scanners?
The network-1 package is only for much older driver versions.
You could also try the latest driver2 package, which theoretically should work with that printer.