For detecting network printers CUPS uses SNMP and DNS-SD. The error messages you are showing are about IPP (which CUPS uses for communication between clients and the CUPS daemon and also between the local and remote CUPS daemons).
As all this seems to not work for you, your machine seems to have a general networking problem. Can you access the internet? Can you ssh to another machine? Can you ssh from another machine to your machine? -- cups is unable to listen on network https://bugs.launchpad.net/bugs/303927 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
