It looks like the reason for this bug has been found upstream in the bug report https://www.cups.org/str.php?L4231 mentioned above. CUPS 1.6.1 uses IPP 2.0 by default failing to talk to older CUPS servers. You can now also find a workaround-patch there.
It looks like the reason for this bug has been found upstream in the bug report https:/ /www.cups. org/str. php?L4231 mentioned above. CUPS 1.6.1 uses IPP 2.0 by default failing to talk to older CUPS servers. You can now also find a workaround-patch there.