/etc/apparmor.d/usr.sbin.avahi-daemon is in apparmor-profiles 2.10.95-0ubuntu2.6~14.04.4.
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 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | #include <tunables/global>
/usr/sbin/avahi-daemon flags=(complain) {
  #include <abstractions/base>
  #include <abstractions/consoles>
  #include <abstractions/dbus>
  #include <abstractions/nameservice>
  capability chown,
  capability dac_override,
  capability kill,
  capability setuid,
  capability setgid,
  capability sys_chroot,
  /etc/avahi/ r,
  /etc/avahi/avahi-daemon.conf r,
  /etc/avahi/hosts r,
  /etc/avahi/services/ r,
  /etc/avahi/services/*.service r,
  @{PROC}/@{pid}/fd/ r,
  /usr/sbin/avahi-daemon mr,
  /usr/share/avahi/introspection/*.introspect r,
  /usr/share/dbus-1/interfaces/org.freedesktop.Avahi.*.xml r,
  /{,var/}run/avahi-daemon/ w,
  /{,var/}run/avahi-daemon/pid krw,
  /{,var/}run/avahi-daemon/socket w,
  # Site-specific additions and overrides. See local/README for details.
  #include <local/usr.sbin.avahi-daemon>
}
 |