Hi Trent, On 2016-08-23 05:17 PM, Trent Lloyd wrote: > The d-bus activation thing is a quirk of systemd, it actually tells you > when you run stop. You need to use disable (as well as stop) to both > stop it and prevent re-activation.
Disabling and stopping the socket and the service works for the manual case, thanks. > root@ubuntu:~# systemctl stop avahi-daemon > Warning: Stopping avahi-daemon.service, but it can still be activated by: > avahi-daemon.socket > > You're right about the ifupdown script, though. Unfortunately for me because I'm trying to remotely disable avahi-daemon for clients connecting to a corporate VPN where "domain.local" is used as the DNS zone. I haven't found any valid workaround for the ifupdown script so I now have to instruct every clients to do the disable/stop steps themselves. This in turn has some undesired ramifications as avahi remains inactive even when they are off of the VPN. > The good news on the one hand is that upstream hopefully soon nss-mdns will be improved to no longer need this trick. I just noticed that you are an avahi developer so maybe it's my lucky day :) I don't know why but avahi doesn't seem to limit itself to resolving single DNS label under ".local"? Currently, it will blackhole queries for "server.domain.local". This makes it close to impossible to use a DNS zone under ".local". While I know that using ".local" isn't ideal, it was the recommended way in the past [1] and it's how many networks are setup. The RFC [2] mentions that ".local" is for single labels and OS X also implementation this rule [3]. Do you think it would be possible for avahi to also implement this behavior? Best regards, Simon 1: https://en.wikipedia.org/wiki/.local#Microsoft_recommendations 2: https://tools.ietf.org/html/rfc6762#section-3 3: https://support.apple.com/en-us/HT201275 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to avahi in Ubuntu. https://bugs.launchpad.net/bugs/1616196 Title: unable to stop avahi-daemon (dbus always restarts it) Status in avahi package in Ubuntu: New Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1616196/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
