Bug#812916: systemd: Broadcast to all ttys on start of 2nd openvpn instance requiring password

[Karl O. Pinc]

Package: systemd
Version: 215-17+deb8u3
Severity: normal

Hello,

I run multiple openvpn instances, each of which requires the
entry of username and password to authenticate at the remote
end.  So, they are started manually with commands like:

  systemctl start openvpn at foo

The first instance starts with no issues.  It prompts for username and
password as expected.  The second also prompts for username and
password, and starts as expected, but broadcatss the message:

  Broadcast message from root at example (Wed 2016-01-27 13:01:26 CST):

  Password entry required for 'Enter Auth Username:' (PID 2717).
  Please enter password with the systemd-tty-ask-password-agent tool!

The above appears in every open terminal window, interrupting
work flow.

I would expect that systemd would handle the 2nd startup like the
first, without disruption of every terminal.

I am filing this against the systemd package rather than openvpn on
the assumption that either every package was converted for use with
systemd in a similar fashion or that there's an underlying issue with
systemd.  Apologies if this is not the case.

-- Package-specific info:

-- System Information:
Debian Release: 8.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  acl             2.2.52-2
ii  adduser         3.113+nmu3
ii  initscripts     2.88dsf-59
ii  libacl1         2.2.52-2
ii  libaudit1       1:2.4-1+b1
ii  libblkid1       2.25.2-6
ii  libc6           2.19-18+deb8u2
ii  libcap2         1:2.24-8
ii  libcap2-bin     1:2.24-8
ii  libcryptsetup4  2:1.6.6-5
ii  libgcrypt20     1.6.3-2
ii  libkmod2        18-3
ii  liblzma5        5.1.1alpha+20120614-2+b3
ii  libpam0g        1.1.8-3.1+deb8u1
ii  libselinux1     2.3-2
ii  libsystemd0     215-17+deb8u3
ii  mount           2.25.2-6
ii  sysv-rc         2.88dsf-59
ii  udev            215-17+deb8u3
ii  util-linux      2.25.2-6

Versions of packages systemd recommends:
ii  dbus            1.8.20-0+deb8u1
ii  libpam-systemd  215-17+deb8u3

Versions of packages systemd suggests:
pn  systemd-ui  <none>

-- no debconf information