[Pkg-utopia-maintainers] Bug#934694: [bananas.hanscees.com] network-manager: networkmanager perhaps does not parse dns-server in interface config file correctly

[hanscees]

Package: network-manager
Version: 1.6.2-3+deb9u2
Severity: normal

Dear Maintainer,


Bug description:
  Hello,
  I am using raspbian (debian based)
  PRETTY_NAME="Debian GNU/Linux 9 (stretch)"

  trying to switch from dhcp to a static IP. But dns config changes keep
  on failing

  The config files I am using that configure static ip and an dns-server are below

  I would suspect networkmanager would thus:
  * manage the file /etc/resolvconf/run/resolv.conf
  * to read *ONLY* the dns-server 192.168.0.112

  However, some (probably systemd?) proces also adds 8.8.8.8
  I suspect because on debian this file (which I did not alter) contains the 8.8.8.8 dns server:

  root at bananas:~# cat /etc/resolvconf/resolv.conf.d/head 
  nameserver 8.8.8.8

  Anyway, after I configured only 1 dns-server and a reboot the resolv.conf file falsely now holds *TWO* dns-severs, and I did not
  configure 8.8.8.8:

Here is that file
  root at bananas:~# cat /etc/resolvconf/run/resolv.conf
  nameserver 8.8.8.8
  nameserver 192.168.0.112


  I was wondering if this is a bug in networkmanager? Should it not make
  sure resolv.conf reflects its configfiles?

  Thanks.

  
  root at bananas:~# nmcli d
  DEVICE  TYPE      STATE      CONNECTION 
  eth0    ethernet  connected  eth0       
  bond0   bond      unmanaged  --         
  dummy0  dummy     unmanaged  --         
  lo      loopback  unmanaged  --         
  root at bananas:~# nmcli c
  NAME             UUID                                  TYPE            DEVICE 
  eth0             89f35383-2b42-4bec-8220-e4db54512147  802-3-ethernet  eth0   
  Ifupdown (eth0)  681b428f-beaf-8932-dce4-687ed5bae28e  802-3-ethernet  --   


  
  root at bananas:~# cat /etc/NetworkManager/NetworkManager.conf
  [main]
  plugins=ifupdown,keyfile

  [ifupdown]
  managed=true

  
  root at bananas:~# cat /etc/network/interfaces
  # Include additional interface stanzas.
  source-directory interfaces.d

  # The loopback network interface
  auto lo
  iface lo inet loopback

  # eth0 network interface
  auto eth0
  allow-hotplug eth0
  iface eth0 inet static
      address 192.168.0.83
      gateway 192.168.0.111
      netmask 255.255.255.0
      dns-nameservers 192.168.0.112
  iface eth0 inet6 manual
      pre-down ip -6 addr flush dev $IFACE


O*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 9.9
  APT prefers oldstable-updates
  APT policy: (500, 'oldstable-updates'), (500, 'oldstable')
Architecture: armhf (armv7l)

Kernel: Linux 4.19.62-sunxi (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=locale: Cannot set LC_ALL to default locale: No such file or directory
UTF-8), LANGUAGE=en_US.UTF-8 (charmap=locale: Cannot set LC_ALL to default locale: No such file or directory
UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages network-manager depends on:
ii  adduser                3.115
ii  dbus                   1.10.28-0+deb9u1
ii  init-system-helpers    1.48
ii  libaudit1              1:2.6.7-2
ii  libbluetooth3          5.43-2+deb9u1
ii  libc6                  2.24-11+deb9u4
ii  libglib2.0-0           2.50.3-2
ii  libgnutls30            3.5.8-5+deb9u4
ii  libgudev-1.0-0         230-3
ii  libjansson4            2.9-1
ii  libmm-glib0            1.6.4-1
ii  libndp0                1.6-1+b1
ii  libnewt0.52            0.52.19-1+b1
ii  libnl-3-200            3.2.27-2
ii  libnm0                 1.6.2-3+deb9u2
ii  libpam-systemd         232-25+deb9u11
ii  libpolkit-agent-1-0    0.105-18+deb9u1
ii  libpolkit-gobject-1-0  0.105-18+deb9u1
ii  libreadline7           7.0-3
ii  libselinux1            2.6-3+b3
ii  libsoup2.4-1           2.56.0-2+deb9u2
ii  libsystemd0            232-25+deb9u11
ii  libteamdctl0           1.26-1+b1
ii  libuuid1               2.29.2-1+deb9u1
ii  lsb-base               9.20161125
ii  policykit-1            0.105-18+deb9u1
ii  udev                   232-25+deb9u11
ii  wpasupplicant          2:2.4-1+deb9u4

Versions of packages network-manager recommends:
ii  crda             3.18-1
pn  dnsmasq-base     <none>
ii  iptables         1.6.0+snapshot20161117-6
ii  iputils-arping   3:20161105-1
ii  isc-dhcp-client  4.3.5-3+deb9u1
pn  modemmanager     <none>
pn  ppp              <none>

Versions of packages network-manager suggests:
pn  libteam-utils  <none>

-- Configuration Files:
/etc/NetworkManager/NetworkManager.conf changed [not included]

-- debconf information excluded