It seems that mDNS/Bonjour (aka DNS-SD) is more reliable than the method
which HPLIP uses by default (SNMP? HP guys, am I correct?). DNS-SD is
the more modern way to discover devices in the network and got standard
for many device types, especially also printing. We have standardized
driverless network printing concepts now (used by smartphones but
currently also by desktops, including Ubuntu from 17.04 on) and they all
use DNS-SD for printer discovery in networks. Also CUPS broadcasts
shared printers via DNS-SD so that remote clients find them.

So I want to ask the HPLIP developers at HP to use DNS-SD by default to
find HP network printers or better, both DNS-SD and SNMP in parallel.
Can you do that in the next HPLIP release? Thanks in advance.

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https://bugs.launchpad.net/bugs/1697958

Title:
  HPLIP cannot detect printers in your network

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