I am running Ubuntu Oneiric 11.10 on two computers, one is AMD-64bit architecture, the other i386–same problem on both. In 11.04 I could print and scan just fine, after some tinkering, but after a fresh install of 11.10, adding ppa:michael-gruz/canon, and installing cnijfilter-mx860series and scangearmp-common from the PPA, Ubuntu's system-config-printer cannot detect my network printer.
In the previous installation it appeared as cnijnet://printers-mac-address. I know it should be able to see it because I can ping the printer at its IP address, I can browse the printer's web admin page from the computer, and my Windows guest in VirtualBox on the computer has no problem detecting and installing it. It seems like this problem is new to Oneiric. How I can find my network Pixma again?