>CUPS' behaviour is intentional. It rejects requests addressed to the >system's FQDN host which are received over the local loopback >interface. >127.0.1.1 uses the loopback interface.
Good thing I do not route 127.0.0.0/8 in my network - that wouldn't work anyway. I said that I cannot access CUPS from the local network, not from loopback. -nik