Work around for not properly working DHCP client for IPv4 (NetworkManager)

Seems to be a malfunctioning NetworkManager's DHCP own client, see
https://bbs.archlinux.org/viewtopic.php?id=252265 and
https://wiki.archlinux.org/index.php/NetworkManager#DHCP_client

roles/common/files/NetworkManager.conf

+# Configuration file for NetworkManager.
+#
+# See "man 5 NetworkManager.conf" for details.
+#
+# The directories /usr/lib/NetworkManager/conf.d/ and /run/NetworkManager/conf.d/
+# can contain additional configuration snippets installed by packages. These files are
+# read before NetworkManager.conf and have thus lowest priority.
+# The directory /etc/NetworkManager/conf.d/ can contain additional configuration
+# snippets. Those snippets are merged last and overwrite the settings from this main
+# file.
+#
+# The files within one conf.d/ directory are read in asciibetical order.
+#
+# If /etc/NetworkManager/conf.d/ contains a file with the same name as
+# /usr/lib/NetworkManager/conf.d/, the latter file is shadowed and thus ignored.
+# Hence, to disable loading a file from /usr/lib/NetworkManager/conf.d/ you can
+# put an empty file to /etc with the same name. The same applies with respect
+# to the directory /run/NetworkManager/conf.d where files in /run shadow
+# /usr/lib and are themselves shadowed by files under /etc.
+#
+# If two files define the same key, the one that is read afterwards will overwrite
+# the previous one.
+
+[main]
+#plugins=ifcfg-rh,ibft
+dhcp=dhclient
+
+
+[logging]
+# When debugging NetworkManager, enabling debug logging is of great help.
+#
+# Logfiles contain no passwords and little sensitive information. But please
+# check before posting the file online. You can also personally hand over the
+# logfile to a NM developer to treat it confidential. Meet us on #nm on freenode.
+# Please post full logfiles except minimal modifications of private data.
+#
+# You can also change the log-level at runtime via
+#   $ nmcli general logging level TRACE domains ALL
+# However, usually it's cleaner to enable debug logging
+# in the configuration and restart NetworkManager so that
+# debug logging is enabled from the start.
+#
+# You will find the logfiles in syslog, for example via
+#   $ journalctl -u NetworkManager
+#
+# Note that debug logging of NetworkManager can be quite verbose. Some messages
+# might be rate-limited by the logging daemon (see RateLimitIntervalSec, RateLimitBurst
+# in man journald.conf). Please disable rate-limiting before collecting debug logs.
+#
+#level=TRACE
+#domains=ALL

roles/common/tasks/networking.yml

@@ -8,3 +8,10 @@
   notify:
     - reload nm
     - restart network
+
+- name: Set dhclient as dhcp client for NetworkManager (admin issue 19)
+  become: yes
+  copy:
+    src: NetworkManager.conf
+    dest: /etc/NetworkManager/NetworkManager.conf
+    backup: yes