[Pkg-samba-maint] Bug#932685: Samba package won't respect the -y switch of apt-get install command

[Mikael Hartzell]

Package: samba-common
Version: 2:4.9.5+dfsg-5

I maintain a software package (freelcs.sourceforge.net) that runs on
Debian. My software needs samba and installs this among other packages it
needs with apt-get. The user runs my GUI installer which uses apt-get in
the background to install needed Debian packages unattended. This has
worked fine before in Debian releases 7, 8 and 9, but now in Debian 10 the
installer fails because the samba-common package won't respect the -q=2 -y
swithces on apt-get commandline. The exact commandline I use is:

apt-get -q=2 --reinstall -y  install samba

another commandline I tried is:

sudo apt-get --reinstall -y --no-install-recommends install samba

The expected behavior is that samba package is installed without prompting
the user for anything. However both of these commands now always open up a
prompt asking:

"If your computer gets IP address information from a DHCP server on the
network, the DHCP server may also provide information about WINS servers
("NetBIOS name servers") present on the network.  This requires a change to
your smb.conf file so
that DHCP-provided WINS settings will automatically be read from
/var/lib/samba/dhcp.conf.
The dhcp-client package must be installed to take advantage of this feature.
Modify smb.conf to use WINS settings from DHCP?"

IMHO this seems like a bug in the samba package, since the behavior has
changed from earlier samba - versions and the apt-get switches -q=2 -y and
--no-install-recommends should provide default answers for the packages
questions and the installation should proceed without any prompts.

My architecure is:
uname -a
Linux debian10 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u1 (2019-07-19)
x86_64 GNU/Linux

My CPU is AMD Threadripper 2950X

Here is info about the package that I think is responsible for the faulty
behavior:

dpkg -I samba-common_2%3a4.9.5+dfsg-5_all.deb
 new Debian package, version 2.0.
 size 169456 bytes: control archive=35656 bytes.
      79 bytes,     3 lines      conffiles
    2221 bytes,    97 lines   *  config               #!/bin/sh
     688 bytes,    19 lines      control
     725 bytes,    10 lines      md5sums
    3190 bytes,   117 lines   *  postinst             #!/bin/sh
     734 bytes,    30 lines   *  postrm               #!/bin/sh
  101214 bytes,   557 lines      templates
 Package: samba-common
 Source: samba
 Version: 2:4.9.5+dfsg-5
 Architecture: all
 Maintainer: Debian Samba Maintainers <
pkg-samba-maint at lists.alioth.debian.org>
 Installed-Size: 281
 Pre-Depends: dpkg (>= 1.15.6~)
 Depends: ucf, debconf (>= 0.5) | debconf-2.0
 Recommends: samba-common-bin
 Section: net
 Priority: optional
 Multi-Arch: foreign
 Homepage: http://www.samba.org
 Description: common files used by both the Samba server and client
  Samba is an implementation of the SMB/CIFS protocol for Unix systems,
  providing support for cross-platform file and printer sharing with
  Microsoft Windows, OS X, and other Unix systems.
  .
  This package contains common files used by all parts of Samba.

Mikael Hartzell
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