Public bug reported:
When avahi-daemon is stopped, dbus always revives it.
Steps to reproduce:
1. sudo systemctl stop avahi-daemon.socket
2. sudo systemctl stop avahi-daemon.service
3. ps aux| grep avahi # should return nothing
Currently, dbus revives it right away as shown in syslog:
Aug 23 15:17:22 simon-vm avahi-daemon[4036]: Got SIGTERM, quitting.
Aug 23 15:17:22 simon-vm avahi-daemon[4036]: Leaving mDNS multicast group on
interface ens3.IPv6 with address 2001:470:b1c3:7946::a4.
Aug 23 15:17:22 simon-vm avahi-daemon[4036]: Leaving mDNS multicast group on
interface ens3.IPv4 with address 172.24.26.52.
Aug 23 15:17:22 simon-vm avahi-daemon[4036]: avahi-daemon 0.6.32-rc exiting.
Aug 23 15:17:22 simon-vm dbus[1647]: [system] Activating via systemd: service
name='org.freedesktop.Avahi' unit='dbus-org.freedesktop.Avahi.service'
Aug 23 15:17:22 simon-vm systemd[1]: Stopping Avahi mDNS/DNS-SD Stack...
Aug 23 15:17:22 simon-vm systemd[1]: Stopped Avahi mDNS/DNS-SD Stack.
Aug 23 15:17:22 simon-vm systemd[1]: Listening on Avahi mDNS/DNS-SD Stack
Activation Socket.
Aug 23 15:17:22 simon-vm systemd[1]: Starting Avahi mDNS/DNS-SD Stack...
This automatic revival defeats the purpose of the up script [*] to deactivate
avahi when .local is a regular DNS zone (not mDNS). This also goes against the
principle of least surprise.
*: /etc/network/if-{down,up}.d/avahi-daemon
Additional information:
# lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
# apt-cache policy avahi-daemon dbus systemd
avahi-daemon:
Installed: 0.6.32~rc+dfsg-1ubuntu2
Candidate: 0.6.32~rc+dfsg-1ubuntu2
Version table:
*** 0.6.32~rc+dfsg-1ubuntu2 500
500 http://ca.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
dbus:
Installed: 1.10.6-1ubuntu3
Candidate: 1.10.6-1ubuntu3
Version table:
*** 1.10.6-1ubuntu3 500
500 http://ca.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
systemd:
Installed: 229-4ubuntu7
Candidate: 229-4ubuntu7
Version table:
*** 229-4ubuntu7 500
500 http://ca.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
100 /var/lib/dpkg/status
229-4ubuntu4 500
500 http://ca.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: avahi-daemon 0.6.32~rc+dfsg-1ubuntu2 [modified:
usr/lib/avahi/avahi-daemon-check-dns.sh]
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Tue Aug 23 15:09:40 2016
InstallationDate: Installed on 2016-08-22 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20160819)
ProcEnviron:
LANGUAGE=en_CA:en
TERM=xterm
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
SourcePackage: avahi
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: avahi (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1616196
Title:
unable to stop avahi-daemon (dbus always restarts it)
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