Michael Sweet Mar 5, 2026

The "printer-dns-sd-name" attribute is currently listed with a syntax of "name(63)", but really needs to be "name(63) | no-value" in order to support disabling DNS-SD registration/discovery of the printer.

CUPS has long supported reporting 'no-value' when DNS-SD is disabled for a shared printer, and the 'no-value' out of band value is specifically defined in STD 92 for attributes that can have no value as opposed to an empty name which is different.

From section 5.1.1 of RFC 8011:

    This document defines three "out-of-band" values that are used in
    place of an attribute's defined syntax:
    ...
    o  'no-value': The attribute is supported by the Printer, but the
       Administrator has not yet configured a value.