Do you have the cups-bjnp package installed? It provides the "bjnp" CUPS
backend to use Canon BJNP network printers (not USB printers). It
communicates with the printer on port 8611 in both directions.
The package contains the "bjnp" CUPS backend as the only non-
documentation file. This backend is only executed by CUPS when looking
for printers available for setup ("lpinfo -v" or equivalent IPP request)
where each backend is called once without arguments and when a job is
sent to a queue using this backend. cups-browsed does not trigger any of
these actions.
Do you have any proprietary printer driver software from Canon
installed?
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https://bugs.launchpad.net/bugs/1671974
Title:
cups-browsed Generates Excessive Amounts of UDP Multicast Traffic for
BJNP
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