[Pkg-utopia-maintainers] Bug#924534: network-manager: Regression from 1.14.4-4 in 1.14.6-2, fails to connect to IPv6-only network

[Julien Goodwin]

Package: network-manager
Version: 1.14.6-2
Severity: important
Tags: ipv6

I am currently using an IPv6-only wireless network, in network-manager
1.14.4-4 this worked fine. After upgrading to 1.14.6-2 it wouldn't
connect. Switching to an IPv4+IPv6 wireless network connected fine in
1.14.6-2, after downgrading to 14.4-4 connecting to an IPv6-only network
works again.


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

Kernel: Linux 4.19.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages network-manager depends on:
ii  adduser                3.118
ii  dbus                   1.12.12-1
ii  init-system-helpers    1.56+nmu1
ii  libaudit1              1:2.8.4-2
ii  libbluetooth3          5.50-1
ii  libc6                  2.28-8
ii  libcurl3-gnutls        7.64.0-1
ii  libglib2.0-0           2.58.3-1
ii  libgnutls30            3.6.6-2
ii  libjansson4            2.12-1
ii  libmm-glib0            1.10.0-1
ii  libndp0                1.6-1+b1
ii  libnewt0.52            0.52.20-8
ii  libnm0                 1.14.4-4
ii  libpam-systemd         241-1
ii  libpolkit-agent-1-0    0.105-25
ii  libpolkit-gobject-1-0  0.105-25
ii  libpsl5                0.20.2-2
ii  libreadline7           7.0-5
ii  libselinux1            2.8-1+b1
ii  libsystemd0            241-1
ii  libteamdctl0           1.28-1
ii  libudev1               241-1
ii  libuuid1               2.33.1-0.1
ii  lsb-base               10.2018112800
ii  policykit-1            0.105-25
ii  udev                   241-1
ii  wpasupplicant          2:2.7+git20190128+0c1e29f-2

Versions of packages network-manager recommends:
pn  crda                         <none>
ii  dnsmasq-base [dnsmasq-base]  2.80-1
ii  iptables                     1.8.2-4
ii  isc-dhcp-client              4.4.1-2
ii  modemmanager                 1.10.0-1
ii  ppp                          2.4.7-2+4

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

-- Configuration Files:
/etc/NetworkManager/NetworkManager.conf changed:
[main]
plugins=ifupdown,keyfile
no-auto-default=5c:ff:35:0f:6c:bb,
[ifupdown]
managed=true


-- no debconf information