[Pkg-utopia-maintainers] Bug#842480: avahi-daemon: boot and RAM sleep end with dnscrypt-proxy port covering.

[Jiff]

Package: avahi-daemon
Version: 0.6.32-1
Severity: normal

Dear Mai N'tainer,

   * What led up to the situation?

Booting or recovering from RAM sleep lead to name resolution breakdown.
dnscrypt-proxy use port 5353 and bind point to it as the only forwarder.
avahi-daemon has been installed as other packages dependency
 and left as is; I do not use it.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

At first, I thought it was a dnscrypt-proxy problem until I run:
   netstat -pan|grep 53|grep -v unix

that show port 5353 belong to avahi-daemon:

avahi-daemon ON:
================
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN
8488/named
tcp        0      0 127.0.0.1:5353          0.0.0.0:*               LISTEN
1/init
tcp        0      0 192.168.1.233:53        0.0.0.0:*               LISTEN
8488/named
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN
8488/named
tcp6       0      0 :::53                   :::*                    LISTEN
8488/named
udp        0      0 192.168.1.233:53        0.0.0.0:*
8488/named
udp        0      0 127.0.0.1:53            0.0.0.0:*
8488/named
udp        0      0 192.168.1.233:41176     192.168.1.1:5351        ESTABLISHED
2998/dring
udp        0      0 0.0.0.0:5353            0.0.0.0:*
10061/avahi-daemon:
udp        0      0 127.0.0.1:5353          0.0.0.0:*
1/init
udp6       0      0 :::53                   :::*
8488/named
udp6       0      0 :::5353                 :::*
10061/avahi-daemon:

avahi-daemon OFF:
=================
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN
8488/named
tcp        0      0 127.0.0.1:5353          0.0.0.0:*               LISTEN
1/init
tcp        0      0 192.168.1.233:53        0.0.0.0:*               LISTEN
8488/named
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN
8488/named
tcp6       0      0 :::53                   :::*                    LISTEN
8488/named
udp        0      0 192.168.1.233:53        0.0.0.0:*
8488/named
udp        0      0 127.0.0.1:53            0.0.0.0:*
8488/named
udp        0      0 192.168.1.233:41176     192.168.1.1:5351        ESTABLISHED
2998/dring
udp        0      0 127.0.0.1:5353          0.0.0.0:*
1/init
udp6       0      0 :::53                   :::*
8488/named

(Quite a strange thing that dnscrypt-proxy appears as the init process,
guess it is, once again, a magnificent feature of shitstemd that knows
much better than any admin how to do things on his own machine, even
against his will…)

   * What was the outcome of this action?

Stopping avahi-daemon made my day.
Note that if I play a bit with it, after 2-3 stop/start/restart I'm obliged to
kill -9 it (seven times before it dies, guess because of  shitstemd.)

   * What outcome did you expect instead?

avahi-daemon not covering dnscrypt-proxy port.

Have a nice day.



-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages avahi-daemon depends on:
ii  adduser              3.115
ii  bind9-host [host]    1:9.10.3.dfsg.P4-10.1
ii  dbus                 1.10.12-1
ii  host                 1:9.10.3.dfsg.P4-10.1
ii  init-system-helpers  1.45
ii  libavahi-common3     0.6.32-1
ii  libavahi-core7       0.6.32-1
ii  libc6                2.24-5
ii  libcap2              1:2.25-1
ii  libdaemon0           0.14-6
ii  libdbus-1-3          1.10.12-1
ii  libexpat1            2.2.0-1
ii  lsb-base             9.20161016

Versions of packages avahi-daemon recommends:
ii  libnss-mdns  0.10-7

Versions of packages avahi-daemon suggests:
pn  avahi-autoipd  <none>

-- Configuration Files:
/etc/resolvconf/update-libc.d/avahi-daemon [Errno 2] No such file or directory: u'/etc/resolvconf/update-libc.d/avahi-daemon'

-- no debconf information