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  <info>
    <title>&os; &release.current; Release Notes</title>

    <author>
      <orgname>The &os; Project</orgname>
    </author>

    <pubdate>$FreeBSD$</pubdate>

    <!-- First rev: 285831 -->
    <!-- Last rev: 284813 -->

    <copyright>
      <year>2016</year>
      <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
	Project</holder>
    </copyright>

    <legalnotice xml:id="trademarks" role="trademarks">
      &tm-attrib.freebsd;
      &tm-attrib.ibm;
      &tm-attrib.ieee;
      &tm-attrib.intel;
      &tm-attrib.sparc;
      &tm-attrib.general;
    </legalnotice>

    <abstract>
      <para>The release notes for &os; &release.current; contain
	a summary of the changes made to the &os; base system on the
	&release.branch; development line.  This document lists
	applicable security advisories that were issued since the last
	release, as well as significant changes to the &os; kernel and
	userland.  Some brief remarks on upgrading are also
	presented.</para>
    </abstract>
  </info>

  <sect1 xml:id="intro">
    <title>Introduction</title>

    <para>This document contains the release notes for &os;
      &release.current;.  It describes recently added, changed, or
      deleted features of &os;.  It also provides some notes on
      upgrading from previous versions of &os;.</para>

    <para releasetype="current">The &release.type; distribution to
      which these release notes apply represents the latest point
      along the &release.branch; development branch since
      &release.branch; was created.  Information regarding pre-built,
      binary &release.type; distributions along this branch can be
      found at <uri
	xlink:href="&release.url;">&release.url;</uri>.</para>

    <para releasetype="snapshot">The &release.type; distribution to
      which these release notes apply represents a point along the
      &release.branch; development branch between &release.prev; and
      the future &release.next;.  Information regarding pre-built,
      binary &release.type; distributions along this branch can be
      found at <uri
	xlink:href="&release.url;">&release.url;</uri>.</para>

    <para releasetype="release">This distribution of &os;
      &release.current; is a &release.type; distribution.  It can be
      found at <uri xlink:href="&release.url;">&release.url;</uri> or
      any of its mirrors.  More information on obtaining this (or
      other) &release.type; distributions of &os; can be found in the
      <link
	xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
	  &os;</quote> appendix</link> to the <link
	xlink:href="&url.books.handbook;/">&os;
	Handbook</link>.</para>

    <para>All users are encouraged to consult the release errata
      before installing &os;.  The errata document is updated with
      <quote>late-breaking</quote> information discovered late in the
      release cycle or after the release.  Typically, it contains
      information on known bugs, security advisories, and corrections
      to documentation.  An up-to-date copy of the errata for &os;
      &release.current; can be found on the &os; Web site.</para>

    <para>This document describes the most user-visible new or changed
      features in &os; since &release.prev;.</para>

    <para>Typical release note items document recent security
      advisories issued after &release.prev;, new drivers or hardware
      support, new commands or options, major bug fixes, or
      contributed software upgrades.  They may also list changes to
      major ports/packages or release engineering practices.  Clearly
      the release notes cannot list every single change made to &os;
      between releases; this document focuses primarily on security
      advisories, user-visible changes, and major architectural
      improvements.</para>
  </sect1>

  <sect1 xml:id="upgrade">
    <title>Upgrading from Previous Releases of &os;</title>

    <para arch="amd64,i386">Binary upgrades between RELEASE versions
      (and snapshots of the various security branches) are supported
      using the &man.freebsd-update.8; utility.  The binary upgrade
      procedure will update unmodified userland utilities, as well as
      unmodified <filename>GENERIC</filename> kernel distributed as
      a part of an official &os; release.  The &man.freebsd-update.8;
      utility requires that the host being upgraded have Internet
      connectivity.</para>

    <para>Source-based upgrades (those based on recompiling the &os;
      base system from source code) from previous versions are
      supported, according to the instructions in
      <filename>/usr/src/UPDATING</filename>.</para>

    <important>
      <para>Upgrading &os; should only be attempted after
	backing up <emphasis>all</emphasis> data and configuration
	files.</para>
    </important>
  </sect1>

  <sect1 xml:id="security-errata">
    <title>Security and Errata</title>

    <para>This section lists the various Security Advisories and
      Errata Notices since &release.prev;.</para>

    <sect2 xml:id="security">
      <title>Security Advisories</title>

      &security;
    </sect2>

    <sect2 xml:id="errata">
      <title>Errata Notices</title>

      &errata;
    </sect2>
  </sect1>

  <sect1 xml:id="userland">
    <title>Userland</title>

    <para>This section covers changes and additions to userland
      applications, contributed software, and system utilities.</para>

    <sect2 xml:id="userland-config">
      <title>Userland Configuration Changes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="userland-programs">
      <title>Userland Application Changes</title>

      <para revision="287326,288202" contrib="sponsor" sponsor="&ff;">The
	&man.ar.1; utility now supports a <option>-D</option> flag to
	prevent real mtime, uid, gid, and file mode values from being
	inserted.  This is called <quote>deterministic mode</quote>
	and useful for making the resulting archives reproducible.
	This behavior is enabled by default, and can be disabled by
	specifying a <literal>-U</literal> flag.</para>

      <para revision="286965">The &man.camcontrol.8;
	<command>fwdownload</command> subcommand has been improved.
	Changes include better support of SATA drives, downloading
	firmaware to IBM LTO drives, <option>-q</option> flag to
	suppress information output, and <command>opcodes</command>
	subcommand to issue the <literal>REPORT SUPPORTED
	  OPCODES</literal> service action of the <literal>SCSI
	MAINTENANCE IN</literal> command.</para>

      <para revision="291774">The &man.cp.1; utility has been updated
	to include a new flag, <literal>-s</literal>, which creates
	a symbolic link to the specified source.</para>

      <para revision="285929">A bug in the &man.ctladm.8; utility
	which could return a non-zero value even if it succeeds has
	been fixed.</para>

      <para revision="288185">A bug in the &man.grdc.6; program which
	caused a wrong display in the 12-hour mode has been
	fixed.</para>

      <para revision="286810" contrib="sponsor"
	sponsor="&yandex;">The &man.ifconfig.8; utility now reports
	SFP/SFP+ data when a <option>-v</option> flag is specified and
	the NIC driver provides them.</para>

      <para revision="288048">Bugs in the &man.inetd.8; daemon which
	could cause a crash when an RPC entry is defined and an IPv6
	address is specified in <varname>-a</varname> flag have been
	fixed.</para>

      <para revision="286064">The &man.jail.8; utility has been
	updated to include a new flag, <literal>-l</literal>, which
	ensures a clean environment in the target jail when used.
	Additionally, &man.jail.8; will run a shell within the target
	jail when run no commands are specified.</para>

      <para revision="286952">The &man.last.1; utility now supports
	<literal>reboot</literal> as a pseudo-user name which prints
	all system reboot entries (<literal>SHUTDOWN_TIME</literal>
	and <literal>BOOT_TIME</literal> records).  This was
	accidentally removed as of &os; 9.0.</para>

      <para revision="287027">The &man.mv.1; utility now returns
	<literal>1</literal> instead of <literal>64</literal>
	when more than two arguments are specified and
	the target is not a valid directory.</para>

      <para revision="287122">The &man.mkimg.1; utility has been
	updated to include support for <literal>NTFS</literal>
	filesystems in both <acronym>MBR</acronym> and
	<acronym>GPT</acronym> partitioning schemes.</para>

      <para revision="287122">A bug in the &man.mkimg.1; utility
	which prevented dynamic VHD format from working with QEMU
	has been fixed.</para>

      <para revision="287593">A bug in the &man.netstat.1; utility
	which showed the statistics in the number of packets divided
	by 1024, not 1000 has been fixed.</para>

      <para revision="287746">The &man.pciconf.8; utility has been
	updated to use the PCI ID database from the <filename
	  role="package">misc/pciids</filename> package, if present,
	falling back to the PCI ID database in the &os; base
	system.</para>

      <para revision="288710" contrib="sponsor" sponsor="&gandi;">A
	new utility, &man.sesutil.8;, has been added, which is used
	to manage &man.ses.4; devices.</para>

      <para revision="292231">Support for a
	<option>-manage-gids</option> flag has been added to
	&man.nfsuserd.8;.  This option can be enabled at boot time by
	setting an &man.rc.conf.5; variable
	<varname>nfs_server_managegids</varname> to
	<literal>YES</literal>.</para>

      <para revision="287269">The &man.pkill.1; utility now supports
	&man.jail.2; name in a <option>-j</option> option in addition to
	&man.jail.2; ID.</para>

      <para revision="287084"><command>userdel</command> and
	<command>usermod</command> subcommand of the &man.pw.8; utility
	now supports a <option>-y</option> flag.</para>

      <para revision="292462" contrib="sponsor"
	sponsor="&dellinc;">The resolver library has been updated to
	reload <filename>/etc/resolv.conf</filename> if the
	modification time has changed.</para>

      <para revision="293744" contrib="sponsor" sponsor="&ff;">The
	initial implementation of <quote>reroot</quote> support has
	been added to the &man.reboot.8; utility, allowing the root
	filesystem to be mounted from a temporary source filesystem
	without requiring a full system reboot.</para>

      <para revision="287392">The &man.timeout.1; utility has been
	added.  This utility runs a command with a time limit and is
	compatible with <application>GNU timeout</application>.</para>

      <para revision="287080">The &man.watchdogd.8; daemon now supports
	a <option>-x <replaceable>exit_timeout</replaceable></option>
	option to specify the timeout period in seconds to
	leave in effect when the program exits.</para>

      <para revision="287375">The &man.ypinit.8; script now supports
	<filename>eui64</filename> NIS map file.</para>
    </sect2>

    <sect2 xml:id="userland-contrib">
      <title>Contributed Software</title>

      <para revision="286082">A bug in &man.libarchive.3; library which
	could report an error when handling a sparse file entry
	in a tar file has been fixed
	by importing changeset <literal>bf4f6ec64e</literal>.</para>

      <para revision="286751">Time zone database has been updated to
	version <literal>2015f</literal>.</para>

      <para revision="290152">The &man.file.1; utility has been
	updated to version 5.25.</para>

      <para revision="292588">The &man.xz.1; utility has been updated
	to version 5.2.2, which provides support for multi-threaded
	compression.</para>

      <para revision="293650">The &man.ntpd.8; utility has been
	updated to version 4.2.8p5.</para>

      <para revision="294190">The &man.unbound.8; utility has been
	updated to version 1.5.7.</para>

      <para revision="294286">The &man.less.1; utility has been
	updated to version v481.</para>

      <para revision="295690">The
	<literal>unbound-control-setup</literal> script has been
	removed from the base system.</para>

      <para revision="295691">The &man.unbound.8; utility has been
	updated to enable the <literal>insecure-lan-zones</literal>
	option in preference of listing each <acronym>AS112</acronym>
	zone individually.</para>

      <para revision="296317">The <application>OpenSSL</application>
	suite has been updated to version 1.0.1s.</para>

      <para revision="296853">The <application>OpenSSH</application>
	suite has been updated to version 7.2p2.</para>
    </sect2>

    <sect2 xml:id="userland-installer">
      <title>Installation and Configuration Tools</title>

      <para revision="295264" contrib="sponsor"
	sponsor="&scaleengine;">The &man.bsdinstall.8; utility has
	been updated to support <acronym>ZFS</acronym> installation
	on <acronym>EFI</acronym>-based systems.</para>
    </sect2>

    <sect2 xml:id="userland-rc">
      <title><filename class="directory">/etc/rc.d</filename>
	Scripts</title>

      <para revision="294680">The <filename>rc.d/netwait</filename>
	script has been updated to wait for network
	interfaces that attach late in the boot process, such as some
	<acronym>USB</acronym> network cards.</para>

      <para revision="287091">Firewall rules set by
	<literal>firewall_type="SIMPLE"</literal> now uses
	&man.ipfw.4; <command>tables</command> for addresses to be
	blocked.</para>

      <para revision="287737">The <filename>rc.d/netif</filename>
	script now updates only static routes when an interface
	is specified.</para>
    </sect2>

    <sect2 xml:id="userland-periodic">
      <title><filename class="directory">/etc/periodic</filename>
	Scripts</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="userland-libraries">
      <title>Runtime Libraries and API</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="userland-abi">
      <title>ABI Compatibility</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="kernel">
    <title>Kernel</title>

    <para>This section covers changes to kernel configurations, system
      tuning, and system control parameters that are not otherwise
      categorized.</para>

    <para revision="286742">The &man.vt.4; terminal console driver now
      supports <option>ALT_BREAK_TO_DEBUGGER</option> and
      <varname>debug.kdb.alt_break_to_debugger</varname> sysctl
      variable when kernel debugger support (<option>options
      KDB</option>) is enabled.</para>

    <para revision="287782">The &man.vt.4; terminal console driver now
      supports <varname>kern.vt.bell_enable</varname> sysctl variable
      to enable or disable terminal bell.  The default is
      <literal>1</literal> (enabled).</para>

    <para revision="286843">A <function>thread_create()</function>
      function has been added as an API to create userspace thread in
      kernel space.</para>

    <sect2 xml:id="kernel-bugfix">
      <title>Kernel Bug Fixes</title>

      <para revision="288167" contrib="sponsor"
	sponsor="&multiplay;">The &man.kqueue.2; system call has been
	updated to handle write events to files larger than 2
	gigabytes.</para>
    </sect2>

    <sect2 xml:id="kernel-config">
      <title>Kernel Configuration</title>

      <para revision="286132" contrib="sponsor"
	sponsor="&ff;" arch="amd64,i386">The &man.pms.4; driver
	has been removed from
	<filename>GENERIC</filename> kernel.</para>
    </sect2>

    <sect2 xml:id="kernel-sysctl">
      <title>System Tuning and Controls</title>

      <para revision="287438">A &man.sysctl.3; variable
	<varname>kern.features.invariants</varname> has been added.
	It shows if the kernel is compiled with <option>INVARIANTS</option>
	or not.</para>

      <para revision="286322" contrib="sponsor"
	sponsor="&ff;">A bug which could prevent a loader
	tunable <varname>kern.racct.enable</varname> from working
	has been fixed.</para>
    </sect2>
  </sect1>

  <sect1 xml:id="drivers">
    <title>Devices and Drivers</title>

    <para>This section covers changes and additions to devices and
      device drivers since &release.prev;.</para>

    <sect2 xml:id="drivers-device">
      <title>Device Drivers</title>

      <para revision="287079" arch="arm">The <literal>imxwdt</literal>
	driver, which supports Freescale i.MX watchdog, has been
	fixed.</para>

      <para revision="287926">The &man.puc.4; driver now supports MSI
	interrupts and prefers it to the legacy interrupts.  This
	behavior can be disabled by setting
	<varname>hw.puc.msi_disable</varname> loader tunable.</para>

      <para revision="287037">A bug in the &man.uart.4; driver which
	could cause a polarity reversal of PPS (Pulse Per Second)
	capture events has been fixed.  The trailing edge of a
	positive PPS pulse and the leading edge of the next pulse were
	used as "assert" and "clear" event respectively.</para>

      <para revision="287037">The &man.uart.4; driver now supports
	runtime configuration of PPS signal source captured by the
	driver via <varname>dev.uart.pps_mode</varname> and
	<varname>dev.uart.<replaceable>0</replaceable>.pps_mode</varname>
	sysctl variables.  The values <literal>0</literal>,
	<literal>1</literal>, and <literal>2</literal> correspond to
	disabled, capturing pulses on the CTS line,
	and capturing pulses on the DCD line, respectively.
	The default value is <literal>2</literal>.</para>

      <para revision="287035">The &man.uftdi.4; driver now supports
	<varname>UFTDIIOC_READ_EEPROM</varname>,
	<varname>UFTDIIOC_WRITE_EEPROM</varname>,
	and <varname>UFTDIIOC_ERASE_EEPROM</varname>
	&man.ioctl.2; to
	read/write serial EEPROM attached to the controller chip.</para>
    </sect2>

    <sect2 xml:id="drivers-storage">
      <title>Storage Drivers</title>

      <para revision="280451">Legacy &man.ata.4; drivers such as
	<literal>ataahci</literal>, <literal>ataadaptec</literal>,
	and <literal>mv_sata</literal> have been removed in favor of
	the new drivers such as &man.ahci.4;, &man.siis.4;, and
	&man.mvs.4;.</para>

      <para revision="288732" contrib="sponsor" sponsor="&ix;">The
	<acronym>CTL</acronym> High Availability implementation has
	been rewritten.</para>

      <para revision="288810">The &man.ctl.4; driver has been updated
	to support CD-ROM and removable devices.</para>

      <para contrib="sponsor" sponsor="&ix;">The &man.isp.4; driver has
	been updated and improved: added support for 16Gbps FC cards,
	improved target mode support, completed Multi-ID (NPIV)
	functionality.</para>
    </sect2>

    <sect2 xml:id="drivers-network">
      <title>Network Drivers</title>

      <para revision="295524" contrib="sponsor"
	sponsor="&limelight;, &intelcorp;">The &man.ixgbe.4; driver
	has been updated to version 3.1.13-k.</para>

      <para revision="286895">Firmwares for model T4 and T5 bundled
	with the &man.cxgbe.4; driver have been updated to
	version 1.14.4.0.</para>
    </sect2>
  </sect1>

  <sect1 xml:id="hardware">
    <title>Hardware Support</title>

    <para>This section covers general hardware support for physical
      machines, hypervisors, and virtualization environments, as well
      as hardware changes and updates that do not otherwise fit in
      other sections of this document.</para>

    <sect2 xml:id="hardware-support">
      <title>Hardware Support</title>

      <para revision="293675">The &man.ismt.4; driver has been added,
	providing support for recent &intel; SMBus 2.0
	controllers.</para>
    </sect2>

    <sect2 xml:id="hardware-virtualization">
      <title>Virtualization Support</title>

      <para revision="287802">The &man.xen.4; driver has been updated
	to include support for <literal>blkif</literal> indirect
	segment I/O.</para>
    </sect2>

    <sect2 xml:id="hardware-arm">
      <title>ARM Support</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="storage">
    <title>Storage</title>

    <para>This section covers changes and additions to file systems
      and other storage subsystems, both local and networked.</para>

    <sect2 xml:id="storage-general">
      <title>General Storage</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="storage-net">
      <title>Networked Storage</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="storage-zfs">
      <title>ZFS</title>

      <para revision="287665" contrib="sponsor"
	sponsor="&clusterhq;">The &man.zfs.8; <literal>l2arc</literal>
	code has been updated to take <literal>ashift</literal> into
	account when gathering buffers to be written to the
	<literal>l2arc</literal> device.</para>
    </sect2>

    <sect2 xml:id="storage-geom">
      <title>&man.geom.4;</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="boot">
    <title>Boot Loader Changes</title>

    <para>This section covers the boot loader, boot menu, and other
      boot-related changes.</para>

    <sect2 xml:id="boot-loader">
      <title>Boot Loader Changes</title>

      <para revision="294445">Initial terminal emulation support has
	been added to <filename>loader.efi</filename> for
	<acronym>UEFI</acronym>-based systems.</para>

      <para revision="294999" contrib="sponsor"
	sponsor="&multiplay;">Initial <acronym>ZFS</acronym> boot
	support has been added to the <acronym>EFI</acronym>
	implementation.</para>

      <para revision="295475" contrib="sponsor"
	sponsor="&scaleengine;">The <acronym>UEFI</acronym> loader has
	been updated to support multiple <acronym>ZFS</acronym> boot
	environments, such as those provided by <filename
	  role="package">sysutils/beadm</filename>.</para>
    </sect2>

    <sect2 xml:id="boot-menu">
      <title>Boot Menu Changes</title>

      <para revision="294446">The <acronym>UEFI</acronym> boot menu
	has been updated to enable the <quote>Beastie</quote> menu,
	similiar to the traditional &man.sc.4; boot menu.</para>
    </sect2>
  </sect1>

  <sect1 xml:id="network">
    <title>Networking</title>

    <para>This section describes changes that affect networking in
      &os;.</para>

    <para revision="287594,287723">The &man.epair.4; virtual
      Ethernet interface and the &man.lagg.4; pseudo interface now
      support <filename>VIMAGE</filename> kernel.</para>

    <para revision="287594">A bug in the &man.epair.4; virtual
      Ethernet interface which could cause a panic when running
      &man.ifconfig.8; <command>create</command> and
      <command>destory</command> quickly has been fixed.</para>

    <para revision="287723">&man.sysctl.3; variables in the
      &man.lagg.4; pseudo interface
      <varname>net.link.lagg.<replaceable>N</replaceable>.<replaceable>*</replaceable></varname>
      have been removed in favor of per-interface &man.ifconfig.8;
      flags and options.  <command>ifconfig -v</command>
      command shows them.</para>

    <para revision="287723">Bugs in the
      &man.lagg.4; pseudo interface which could cause a system
      panic have been fixed.</para>

    <para revision="286125" contrib="sponsor"
      sponsor="&netgate;">A bug in &man.pf.4; packet filter which
      could cause a rule with no <literal>log</literal> parameter to
      log the matched packet has been fixed.</para>

    <para revision="286316">A bug in &os; IPv6 stack which did not
      invoke an <literal>LLENTRY_DELETED</literal> event when an L2
      address was deleted from the link-level address table for
      IPv6.</para>

    <para revision="287733">Obsolete APIs,
      <literal>SIOCGDRLST_IN6</literal> and
      <literal>SIOCGPRLST_IN6</literal> in &os; IPv6 stack have been
      removed.</para>

    <sect2 xml:id="network-protocols">
      <title>Network Protocols</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="ports">
    <title>Ports Collection and Package Infrastructure</title>

    <para>This section covers changes to the &os;&nbsp;Ports
      Collection, package infrastructure, and package maintenance and
      installation tools.</para>

    <sect2 xml:id="ports-infrastructure">
      <title>Infrastructure Changes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="ports-packages ">
      <title>Packaging Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="doc">
    <title>Documentation</title>

    <para>This section covers changes to the &os;&nbsp;Documentation
      Project sources and toolchain.</para>

    <sect2 xml:id="doc-sources">
      <title>Documentation Source Changes</title>

      <para>&nbsp;</para>
    </sect2>

    <sect2 xml:id="doc-toolchain">
      <title>Documentation Toolchain Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>

  <sect1 xml:id="releng">
    <title>Release Engineering and Integration</title>

    <para>This section covers changes that are specific to the
      &os;&nbsp;Release Engineering processes.</para>

    <sect2 xml:id="releng-changes">
      <title>Integration Changes</title>

      <para>&nbsp;</para>
    </sect2>
  </sect1>
</article>