I installed those drivers and it still did not print.
I found this tip somewhere else.
$ cnijnetprn --search auto
It returned this...
network cnijnet:/18-0C-AC-C8-67-F7 "Canon MG6300 series" "Canon-MG6300-series_18-0C-AC-C8-67-F7"
Then I used lpadmin, entering the printer name, ppd file and the MAC address from above.
$ sudo /usr/sbin/lpadmin -p canonmg6320 -P canonmg6300.ppd -v cnijnet:/18-0C-AC-C8-67-F7 -E
I had to cd to where the *.pdd files are located (or enter the full path).
After that a new printer was listed as available, with the name canonmg6320. A test page worked.
The test page said that the driver was CNMG6300.PPD