Comment 27 for bug 881843

Actually, before testing the patch in my previous comment, try changing your printer URI to "ipp://192.168.1.1:631/ipp?version=1.0" briefly, and see if that works. If it does, then we know it's a protocol version issue, and testing the patch would then make sense.

I also think it might be worth me repositioning the code within that patch so that it is only called if the existing downgrade code finds nothing wrong. (Otherwise, we may end up downgrading further than we have to.)