Canon MG6400 series Online Manual page 84

The Bonjour service names of the scanners or printers that can be used over the
network are displayed.
You can select up to three scanners and printers in total at the same time.
Important
You cannot use over the network if Bonjour is disabled. Enable Bonjour on your
scanner or printer.
If you have changed the Bonjour service name after selecting your scanner or
printer by Bonjour service name, reopen the network selection screen and select the
new Bonjour service name from Scanners.
Note
If the Bonjour service name of your scanner or printer does not appear or cannot be
selected, check the following, click OK to close the screen, then reopen it and try
selecting again.
The scanner driver is installed
Network settings of your scanner or printer is completed after installing the scanner
driver
Network communication between your scanner or printer and computer is enabled
If your scanner or printer still does not appear, refer to "Problems with Network
Communication" for your model from Home of the Online Manual.
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