/usr/share/gvfs/mounts/dns-sd.mount is in gvfs-backends 1.30.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | [Mount]
Type=dns-sd
Exec=/usr/lib/gvfs/gvfsd-dnssd
AutoMount=true
DBusName=org.gtk.vfs.mountpoint_dnssd
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