Randomly get only IPV6 address on Wi-Fi after suspend

[Pilot6]

Randomly (in about 10% of cases) I do not get IPV4 address on the wireless interface.

This problem is known at AskUbuntu. People ask why only Youtube, Google, etc work after a suspend...

ProblemType: Bug
DistroRelease: Ubuntu 16.04, Ubuntu 14.04
Package: network-manager 1.2.6-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.8.0-53.56~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-53-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Jun 3 19:11:21 2017
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-02-29 (459 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static metric 600
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.140 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to xenial on 2016-03-12 (447 days ago)
mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2016-03-13T01:40:30.748775
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/0 Pilot6 49953f06-beea-41f6-be47-bb4bb41bf599 /org/freedesktop/NetworkManager/ActiveConnection/51
 eth0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/2 -- -- --
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.2.6 connected started full enabled enabled enabled enabled enabled

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.