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Edit File: ipp-client.xml
<?xml version="1.0" encoding="utf-8"?> <service> <short>Network Printing Client (IPP)</short> <description>The Internet Printing Protocol (IPP) is used for distributed printing. IPP (over udp) provides the ability to get information about a printer (e.g. capability and status) and to control printer jobs. If you plan to use a remote network printer via cups, do not disable this option.</description> <port protocol="udp" port="631"/> </service>