[Pkg-utopia-maintainers] Bug#850620: [network-manager] does not update lifetime of temporary ipv6 addresses anymore, resulting in connection breakage

[Maximilian Engelhardt]

Package: network-manager
Version: 1.4.4-1
Severity: important

--- Please enter the report below this line. ---

After updating to network-manger 1.4.4-1 I noticed a lot of breakages in ssh 
connections.  It turned out this is related to temporary ipv6 addresses being 
deprecated, deleted and newly created at a rapid rate, thus after a short time 
the address used by my ssh connection vanishes.

Having a closer look with "ip addr show" explained what is going on. My router 
advertisements have a short lifetime configured. A new router advertisement 
does only update the lifetime of the mngtmpaddr but not the temporary 
addresses. This causes them to time out and permanently being deleted and 
newly created.

Disabling network-manager doesn't show this problem. Also downgrading network-
manager to version 1.4.2-3 fixes this issue for me.

This bugs breaks all ipv6 network connections that are active longer than a 
few minutes for me.

Thanks,
Maxi

--- System information. ---
Architecture: 
Kernel:       Linux 4.8.0-2-amd64

Debian Release: stretch/sid
  500 testing         httpredir.debian.org 
  500 stable          security.debian.org 

--- Package information. ---
Depends                      (Version) | Installed
======================================-+-=============
libaudit1                 (>= 1:2.2.1) | 1:2.6.7-1
libbluetooth3                (>= 4.91) | 5.43-1
libc6                        (>= 2.17) | 
libglib2.0-0               (>= 2.43.2) | 
libgnutls30                 (>= 3.5.0) | 
libgudev-1.0-0                (>= 165) | 
libmm-glib0                 (>= 1.0.0) | 
libndp0                       (>= 1.2) | 
libnewt0.52                            | 
libnl-3-200                (>= 3.2.21) | 
libnm0                      (>= 1.4.0) | 
libpolkit-agent-1-0          (>= 0.99) | 
libpolkit-gobject-1-0       (>= 0.104) | 
libreadline7                  (>= 6.0) | 
libselinux1                  (>= 1.32) | 
libsoup2.4-1                 (>= 2.40) | 
libsystemd0                   (>= 209) | 
libteamdctl0                  (>= 1.9) | 
libuuid1                     (>= 2.16) | 
init-system-helpers         (>= 1.18~) | 
lsb-base                   (>= 3.2-14) | 
wpasupplicant             (>= 0.7.3-1) | 
dbus                        (>= 1.1.2) | 
udev                                   | 
adduser                                | 
libpam-systemd                         | 
policykit-1                            | 


Recommends                (Version) | Installed
===================================-+-================
ppp                                 | 2.4.7-1+4
dnsmasq-base                        | 2.76-5
iptables                            | 1.6.0+snapshot20161117-4
modemmanager                        | 
crda                                | 3.13-1+b2
isc-dhcp-client     (>= 4.1.1-P1-4) | 4.3.5-1
iputils-arping                      | 3:20161105-1


Suggests           (Version) | Installed
============================-+-===========
libteam-utils                | 




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