systemd System and Service Manager
+CHANGES WITH 226:
+
+ * The DHCP implementation of systemd-networkd gained a set of new
+ features:
+
+ - Server and client now support transmission and reception of
+ timezone information. It can be configured via the newly introduced
+ network options 'DHCP.UseTimezone=', 'DHCPServer.EmitTimezone=',
+ and 'DHCPServer.Timezone='.
+ Transmission of timezone information is enabled for containers by
+ default now. Furthermore, if systemd-timesyncd is running, it will
+ be updated with the received information.
+
+ - The DHCP server now supports emitting DNS and NTP information. It
+ can be enabled and configured via 'EmitDNS=', 'DNS=', 'EmitNTP=',
+ and 'NTP='.
+ If transmission of DNS and NTP information is enabled, but no
+ specific data-set is configured, the uplink information is used.
+
+ - Lease timeouts can now be configured via 'MaxLeaseTimeSec=' and
+ 'DefaultLeaseTimeSec='.
+
+ - The DHCP server now supports improved predictability of leases.
+ Clients are more likely to get the same lease information back,
+ even if the server loses state.
+
+ - The DHCP server supports two new configuration options to specify
+ the lease pool, 'PoolOffset=' and 'PoolSize='.
+
+ * The encapsulation limit of tunnels in systemd-networkd can now be
+ configured via 'EncapsulationLimit='. It allows modifying the maximum
+ additional levels of encapsulation that are permitted to be prepended
+ to a packet.
+
+ * systemd now supports the concept of user-buses over session-buses, if
+ used with dbus-1.10 (and enabled via dbus --enable-user-session).
+
+ * systemd-networkd now supports predictable interface names for virtio
+ devices.
+
+ * systemd now optionally supports the unified cgroup hierarchy. If
+ enabled via the kernel command-line option
+ 'systemd.unified_cgroup_hierarchy=1', systemd will try to mount the
+ unified cgroup hierarchy directly on /sys/fs/cgroup. If not enabled,
+ or not available, systemd will fall back to legacy cgroups.
+ Host system and containers can mix and match legacy and unified
+ hierarchies as they wish. By default, nspawn will use the same
+ hierarchy as the host.
+ Please note that the unified hierarchy is an experimental kernel
+ feature and is likely to change in one of the next kernel releases.
+ Therefore, it should not be enabled by default.
+
+ Contributions from: Cristian Rodríguez, Daniel Mack, David Herrmann,
+ Eugene Yakubovich, Evgeny Vereshchagin, Filipe Brandenburger, Jan
+ Alexander Steffens (heftig), Jan Synacek, Kay Sievers, Lennart
+ Poettering, Mangix, Marcel Holtmann, Martin Pitt, Michal Sekletar, Peter
+ Hutterer, Piotr Drąg, reverendhomer, Robin Hack, Susant Sahani, Sylvain
+ Pasche, Thomas Hindoe Paaboel Andersen, Tom Gundersen
+
+ -- Berlin, 2015-09-XX
+
+CHANGES WITH 225:
+
+ * machinectl gained a new verb 'shell' which opens a fresh shell on the
+ target machine. It is similar to 'login', but spawns the shell
+ directly. The pseudo machine '.host' now refers to the local host and
+ is used by default. Hence, 'machinectl shell' can be used as
+ replacement for 'su' which spawns the session as a fresh systemd
+ unit.
+
+ * systemd-networkd learned to cope with private-zone DHCP options and
+ allows other programs to query the values.
+
+ Contributions from: Alastair Hughes, Alex Crawford, Daniel Mack, David
+ Herrmann, Dimitri John Ledkov, Eric Kostrowski, Evgeny Vereshchagin,
+ Felipe Sateler, HATAYAMA Daisuke, Jan Pokorný, Jan Synacek, Johnny
+ Robeson, Karel Zak, Kay Sievers, Kefeng Wang, Lennart Poettering, Major
+ Hayden, Marcel Holtmann, Markus Elfring, Martin Mikkelsen, Martin Pitt,
+ Matt Turner, Maxim Mikityanskiy, Michael Biebl, Namhyung Kim, Nicolas
+ Cornu, Owen W. Taylor, Patrik Flykt, Peter Hutterer, reverendhomer,
+ Richard Maw, Ronny Chevalier, Seth Jennings, Stef Walter, Susant Sahani,
+ Thomas Blume, Thomas Hindoe Paaboel Andersen, Thomas Meyer, Tom
+ Gundersen, Vincent Batts, WaLyong Cho, Zbigniew Jędrzejewski-Szmek
+
+ -- Berlin, 2015-08-27
+
CHANGES WITH 224:
* The systemd-efi-boot-generator functionality was merged into