[security - medium] NetworkManager security, bug fix, and enhancement update

ModemManager
The ModemManager service manages WWAN modems and provides a consistent API for
interacting with these devices to client applications.

NetworkManager
NetworkManager is a system service that manages network interfaces and
connections based on user or automatic configuration. It supports
Ethernet, Bridge, Bond, VLAN, Team, InfiniBand, Wi-Fi, mobile broadband
(WWAN), PPPoE and other devices, and supports a variety of different VPN
services.

NetworkManager-libreswan
This package contains software for integrating the libreswan VPN software
with NetworkManager and the GNOME desktop

network-manager-applet
This package contains a network control and status notification area applet
for use with NetworkManager.

Security issues fixed with this release:

CVE-2015-0272
GNOME NetworkManager allows remote attackers to cause a denial of
service (IPv6 traffic disruption) via a crafted MTU value in an IPv6
Router Advertisement (RA) message, a different vulnerability than
CVE-2015-8215.
CVE-2015-2924
The receive_ra function in rdisc/nm-lndp-rdisc.c in the Neighbor
Discovery (ND) protocol implementation in the IPv6 stack in
NetworkManager 1.x allows remote attackers to reconfigure a hop-limit
setting via a small hop_limit value in a Router Advertisement (RA)
message, a similar issue to CVE-2015-2922.

Fixed bugs:

* It was not previously possible to set the Wi-Fi band to the "a" or "bg" values to lock to a specific frequency band. NetworkManager has been fixed, and it now sets the wpa_supplicant's "freq_list" option correctly, which enables proper Wi-Fi band locking.
* NetworkManager immediately failed activation of devices that did not have a carrier early in the boot process. The legacy network.service then reported activation failure. Now, NetworkManager has a grace period during which it waits for the carrier to appear. Devices that have a carrier down for a short time on system startup no longer cause the legacy network.service to fail.
* NetworkManager brought down a team device if the teamd service managing it exited unexpectedly, and the team device was deactivated. Now, NetworkManager respawns the teamd instances that disappear and is able to recover from a teamd failure avoiding disruption of the team device operation.
* NetworkManager did not send the FQDN DHCP option even if host name was set to FQDN. Consequently, Dynamic DNS (DDNS) setups failed to update the DNS records for clients running NetworkManager. Now, NetworkManager sends the FQDN option with DHCP requests, and the DHCP server is able to create DNS records for such clients.
* The command-line client was not validating the vlan.flags property correctly, and a spurious warning message was displayed when the nmcli tool worked with VLAN connections. The validation routine has been fixed, and the warning message no longer appears.
* NetworkManager did not propagate a media access control (MAC) address change from a bonding interface to a VLAN interface on top of it. Consequently, a VLAN interface on top of a bond used an incorrect MAC address. Now, NetworkManager synchronizes the addresses correctly.
Enhancements:

* IPv6 Privacy extensions are now enabled by default. NetworkManager checks the per-network configuration files, NetworkManager.conf, and then falls back to "/proc/sys/net/ipv6/conf/default/use_tempaddr" to determine and set IPv6 privacy settings at device activation.
* The NetworkManager command-line tool, nmcli, now allows setting the wake-on-lan property to 0 ("none", "disable", "disabled").
* NetworkManager now provides information about metered connections.
* NetworkManager daemon and the connection editor now support setting the Maximum Transmission Unit (MTU) of a bond. It is now possible to change MTU of a bond interface in a GUI.
* NetworkManager daemon and the connection editor now support setting the MTU of a team, allowing to change MTU of a teaming interface.