release/doc/en_US.ISO8859-1/relnotes/article.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2 <!DOCTYPE article PUBLIC "-//FreeBSD//DTD DocBook XML V5.0-Based Extension//EN"
   3         "../../../share/xml/freebsd50.dtd" [
   4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
   5  %release;
   6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
   7  %sponsor;
   8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
   9  %vendor;
  10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
  11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
  12 ]>
  13 <article xmlns="http://docbook.org/ns/docbook"
  14   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
  15
  16   <info>
  17     <title>&os; &release.current; Release Notes</title>
  18
  19     <author>
  20       <orgname>The &os; Project</orgname>
  21     </author>
  22
  23     <pubdate>$FreeBSD$</pubdate>
  24
  25     <!-- Last rev: 288943 -->
  26
  27     <copyright>
  28       <year>2017</year>
  29       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
  30         Project</holder>
  31     </copyright>
  32
  33     <legalnotice xml:id="trademarks" role="trademarks">
  34       &tm-attrib.freebsd;
  35       &tm-attrib.ibm;
  36       &tm-attrib.ieee;
  37       &tm-attrib.intel;
  38       &tm-attrib.sparc;
  39       &tm-attrib.general;
  40     </legalnotice>
  41
  42     <abstract>
  43       <para>The release notes for &os; &release.current; contain
  44         a summary of the changes made to the &os; base system on the
  45         &release.branch; development line.  This document lists
  46         applicable security advisories that were issued since the last
  47         release, as well as significant changes to the &os; kernel and
  48         userland.  Some brief remarks on upgrading are also
  49         presented.</para>
  50     </abstract>
  51   </info>
  52
  53   <sect1 xml:id="intro">
  54     <title>Introduction</title>
  55
  56     <para>This document contains the release notes for &os;
  57       &release.current;.  It describes recently added, changed, or
  58       deleted features of &os;.  It also provides some notes on
  59       upgrading from previous versions of &os;.</para>
  60
  61     <para releasetype="current">The &release.type; distribution to
  62       which these release notes apply represents the latest point
  63       along the &release.branch; development branch since
  64       &release.branch; was created.  Information regarding pre-built,
  65       binary &release.type; distributions along this branch can be
  66       found at <uri
  67         xlink:href="&release.url;">&release.url;</uri>.</para>
  68
  69     <para releasetype="snapshot">The &release.type; distribution to
  70       which these release notes apply represents a point along the
  71       &release.branch; development branch between &release.prev; and
  72       the future &release.next;.  Information regarding pre-built,
  73       binary &release.type; distributions along this branch can be
  74       found at <uri
  75         xlink:href="&release.url;">&release.url;</uri>.</para>
  76
  77     <para releasetype="release">This distribution of &os;
  78       &release.current; is a &release.type; distribution.  It can be
  79       found at <uri xlink:href="&release.url;">&release.url;</uri> or
  80       any of its mirrors.  More information on obtaining this (or
  81       other) &release.type; distributions of &os; can be found in the
  82       <link
  83         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
  84           &os;</quote> appendix</link> to the <link
  85         xlink:href="&url.books.handbook;/">&os;
  86         Handbook</link>.</para>
  87
  88     <para>All users are encouraged to consult the release errata
  89       before installing &os;.  The errata document is updated with
  90       <quote>late-breaking</quote> information discovered late in the
  91       release cycle or after the release.  Typically, it contains
  92       information on known bugs, security advisories, and corrections
  93       to documentation.  An up-to-date copy of the errata for &os;
  94       &release.current; can be found on the &os; Web site.</para>
  95
  96     <para>This document describes the most user-visible new or changed
  97       features in &os; since &release.prev;.  In general, changes
  98       described here are unique to the &release.branch; branch unless
  99       specifically marked as &merged; features.</para>
 100
 101     <para>Typical release note items document recent security
 102       advisories issued after &release.prev;, new drivers or hardware
 103       support, new commands or options, major bug fixes, or
 104       contributed software upgrades.  They may also list changes to
 105       major ports/packages or release engineering practices.  Clearly
 106       the release notes cannot list every single change made to &os;
 107       between releases; this document focuses primarily on security
 108       advisories, user-visible changes, and major architectural
 109       improvements.</para>
 110   </sect1>
 111
 112   <sect1 xml:id="upgrade">
 113     <title>Upgrading from Previous Releases of &os;</title>
 114
 115     <para arch="amd64,i386">Binary upgrades between RELEASE versions
 116       (and snapshots of the various security branches) are supported
 117       using the &man.freebsd-update.8; utility.  The binary upgrade
 118       procedure will update unmodified userland utilities, as well as
 119       unmodified GENERIC kernels distributed as a part of an official
 120       &os; release.  The &man.freebsd-update.8; utility requires that
 121       the host being upgraded have Internet connectivity.</para>
 122
 123     <para>Source-based upgrades (those based on recompiling the &os;
 124       base system from source code) from previous versions are
 125       supported, according to the instructions in
 126       <filename>/usr/src/UPDATING</filename>.</para>
 127
 128     <important>
 129       <para>Upgrading &os; should only be attempted after backing up
 130         <emphasis>all</emphasis> data and configuration files.</para>
 131     </important>
 132   </sect1>
 133
 134   <sect1 xml:id="security-errata">
 135     <title>Security and Errata</title>
 136
 137     <para>This section lists the various Security Advisories and
 138       Errata Notices since &release.prev;.</para>
 139
 140     <sect2 xml:id="security">
 141       <title>Security Advisories</title>
 142
 143       &security;
 144     </sect2>
 145
 146     <sect2 xml:id="errata">
 147       <title>Errata Notices</title>
 148
 149       &errata;
 150     </sect2>
 151   </sect1>
 152
 153   <sect1 xml:id="userland">
 154     <title>Userland</title>
 155
 156     <para>This section covers changes and additions to userland
 157       applications, contributed software, and system utilities.</para>
 158
 159     <sect2 xml:id="userland-config">
 160       <title>Userland Configuration Changes</title>
 161
 162       <para revision="313203">The &man.inetd.8; utility can now be
 163         built without <literal>libwrap</literal> support when
 164         <literal>WITHOUT_TCP_WRAPPERS</literal> is set in
 165         &man.src.conf.5;.</para>
 166
 167       <para revision="316045">The &man.libthr.3; library and related
 168         files are now evaluated and removed by the
 169         <literal>delete-old-libs</literal> target when upgrading the
 170         system if <literal>WITHOUT_LIBTHR</literal> is
 171         set in &man.src.conf.5;.</para>
 172
 173       <para revision="316423" contrib="sponsor" sponsor="&ff;">The
 174         <literal>WITH_LLD_AS_LD</literal> build knob has been added,
 175         which installs <application>LLD</application> as
 176         <filename>/usr/bin/ld</filename> if set.</para>
 177     </sect2>
 178
 179     <sect2 xml:id="userland-programs">
 180       <title>Userland Application Changes</title>
 181
 182       <para revision="308720" contrib="sponsor" sponsor="&gandi;">The
 183         &man.cron.8; utility has been updated to add support for
 184         including files within <filename
 185           class="directory">/etc/cron.d</filename> and <filename
 186           class="directory">/usr/local/etc/cron.d</filename> by
 187         default.</para>
 188
 189       <para revision="308721" contrib="sponsor" sponsor="&gandi;">The
 190         &man.syslogd.8; utility has been updated to add the
 191         <literal>include</literal> keyword which allows specifying
 192         a directory containing configuration files to be included in
 193         addition to &man.syslog.conf.5;.  The default
 194         &man.syslog.conf.5; has been updated to include <filename
 195           class="directory">/etc/syslog.d</filename> and <filename
 196           class="directory">/usr/local/etc/syslog.d</filename> by
 197         default.</para>
 198
 199       <para revision="308914">The &man.zfsbootcfg.8; utility has been
 200         added, providing one-time &man.boot.config.5;-style options
 201         for &man.zfsboot.8;.</para>
 202
 203       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 204         &man.setkey.8; utility has been modified to show the runtime
 205         <acronym>NAT-T</acronym> configuration.  The
 206         <literal>-g</literal> and <literal>-t</literal> flags have
 207         been added, which list only global and virtual policies,
 208         respectively, when used with the <literal>-D</literal> and
 209         <literal>-P</literal> flags.</para>
 210
 211       <para revision="316098" contrib="sponsor"
 212         sponsor="&dellemc;">The &man.getaddrinfo.1; utility has been
 213         added, ported from NetBSD.</para>
 214
 215       <para revision="316944" contrib="sponsor"
 216         sponsor="&multiplay;">The &man.jail.8; utility has been
 217         updated to allow explicitly-assigned <acronym>IPv4</acronym>
 218         and <acronym>IPv6</acronym> addresses to be used within
 219         a jail.</para>
 220
 221       <para revision="317855">The &man.daemon.8; utility has been
 222         updated to allow redirecting &man.stdout.4; and &man.stderr.4;
 223         output to &man.syslog.3; or to a file.</para>
 224     </sect2>
 225
 226     <sect2 xml:id="userland-contrib">
 227       <title>Contributed Software</title>
 228
 229       <para revision="307729">&man.unbound.8; has been updated to
 230         version 1.5.10.</para>
 231
 232       <para revision="309511"><application>Subversion</application>
 233         has been updated to version 1.9.5.</para>
 234
 235       <para revision="309847">&man.file.1; has been updated to version
 236         5.29.</para>
 237
 238       <para revision="310490">The &man.amd.8; utility has been updated
 239         to version 6.2.</para>
 240
 241       <para revision="312336">The <acronym>CLDR</acronym> locales have
 242         been updated to version 30.0.3.  The unicode locales have been
 243         updated to version 9.0.0.</para>
 244
 245       <para revision="312517">&man.xz.1; has been updated to version
 246         5.2.3.</para>
 247
 248       <para revision="313537">&man.tcpdump.1; has been updated to
 249         version 4.9.0.</para>
 250
 251       <para revision="313795">&man.zlib.3; has been updated to version
 252         1.2.11.</para>
 253
 254       <para revision="313980"><application>openresolv</application>
 255         has been updated to version 3.9.0.</para>
 256
 257       <para revision="313680">The NetBSD test suite has been updated
 258         to the 01.11.2017_23.20 snapshot.</para>
 259
 260       <para revision="314278"><literal>libucl</literal> has been
 261         updated to version 20170219.</para>
 262
 263       <para revision="315432">&man.libarchive.3; has been updated to
 264         version 3.3.1.</para>
 265
 266       <para revision="315995">&man.dma.8; has been updated to the
 267         2017-02-10 snapshot.</para>
 268
 269       <para revision="316068">&man.ntpd.8; has been updated to version
 270         4.2.8p10.</para>
 271
 272       <para revision="316303"><application>ACPICA</application> has
 273         been updated to version 20170303.</para>
 274
 275       <para revision="316349">Timezone data files have been updated to
 276         version 2017b.</para>
 277
 278       <para revision="316420">&man.mandoc.1; has been updated to
 279         version 1.14.</para>
 280
 281       <para revision="316423"><application>Clang</application> has
 282         been updated to version 4.0.0.</para>
 283
 284       <para revision="316423"><application>LLVM</application> has
 285         been updated to version 4.0.0.</para>
 286
 287       <para revision="316423"><application>LLD</application> has
 288         been updated to version 4.0.0.</para>
 289
 290       <para revision="316423"><application>LLDB</application> has
 291         been updated to version 4.0.0.</para>
 292
 293       <para revision="316423"><application>compiler-rt</application>
 294         has been updated to version 4.0.0.</para>
 295
 296       <para revision="316423"><application>libc++</application> has
 297         been updated to version 4.0.0.</para>
 298
 299       <para revision="316957">&man.tcsh.1; has been updated to version
 300         6.20.00.</para>
 301
 302       <para revision="318239" contrib="sponsor"
 303         sponsor="&ff;">&man.blacklistd.8; has been updated to the
 304         20170503 snapshot.</para>
 305
 306       <para revision="318402" contrib="sponsor"
 307         sponsor="&ff;">&man.blacklistd.8; support for
 308         <application>OpenSSH</application> has been refined to adjust
 309         notification points to catch all authentication failures
 310         rather than only those caused by invalid login
 311         usernames.</para>
 312     </sect2>
 313
 314     <sect2 xml:id="userland-installer">
 315       <title>Installation and Configuration Tools</title>
 316
 317       <para revision="311686">The &man.bsdinstall.8; installer has
 318         been updated to include support for hidden wireless networks
 319         when configuring the &man.wlan.4; interface.</para>
 320     </sect2>
 321
 322     <sect2 xml:id="userland-rc">
 323       <title><filename class="directory">/etc/rc.d</filename>
 324         Scripts</title>
 325
 326       <para revision="310009" contrib="sponsor"
 327         sponsor="&fisglobal;">The <literal>jail_confwarn</literal>
 328         &man.rc.conf.5; entry has been added, which suppresses warning
 329         about obsolete per-&man.jail.8; configurations.</para>
 330     </sect2>
 331
 332     <sect2 xml:id="userland-periodic">
 333       <title><filename class="directory">/etc/periodic</filename>
 334         Scripts</title>
 335
 336       <para revision="317373">The default &man.periodic.conf.5; has
 337         been updated to include the
 338         <literal>anticongestion_sleeptime</literal> option,
 339         consolidating random sleeps in &man.periodic.8; scripts and
 340         replacing the <literal>daily_ntpd_avoid_congestion</literal>
 341         option.  The default value is 3600 seconds.</para>
 342
 343       <para revision="317857">The <filename>410.status-mfi</filename>
 344         &man.periodic.8; script has been added to monitor the status
 345         of &man.mfi.4; volumes.</para>
 346     </sect2>
 347
 348     <sect2 xml:id="userland-libraries">
 349       <title>Runtime Libraries and API</title>
 350
 351       <para revision="316039">The &man.kvm.close.3; function has been
 352         updated to return the accumulated error from previous
 353         &man.close.2; calls.</para>
 354
 355       <para revision="317618" contrib="sponsor"
 356         sponsor="&dellemc;">The <function>clock_nanosleep()</function>
 357         system call has been added.  The
 358         <function>nanosleep()</function> system call is now a wrapper
 359         around <function>clock_nanosleep()</function>.</para>
 360     </sect2>
 361
 362     <sect2 xml:id="userland-abi">
 363       <title>ABI Compatibility</title>
 364
 365       <para revision="309258">The type <literal>max_align_t</literal>
 366         is now defined for C11 compliance.</para>
 367
 368       <para revision="315274" contrib="sponsor"
 369         sponsor="&dellemc;">The
 370         <function>sem_clockwait_np()</function> library function has
 371         been added, which allows the caller to specify the reference
 372         clock and choose between absolute and relative mode.</para>
 373
 374       <para revision="315282">The <application>clang</application>
 375         <literal>nullability</literal> attribute has been added to the
 376         <literal>C</literal> library headers.</para>
 377     </sect2>
 378
 379     <sect2 xml:id="userland-debug">
 380       <title>Userland Debugging</title>
 381
 382       <para revision="304499">&man.ptrace.2; now supports events for
 383         &man.vfork.2;, permitting reliable debugging across
 384         &man.vfork.2; invocations.</para>
 385
 386       <para revision="306786">Process core dumps now include the
 387         process ID (<acronym>PID</acronym> and command line
 388         arguments.</para>
 389     </sect2>
 390   </sect1>
 391
 392   <sect1 xml:id="kernel">
 393     <title>Kernel</title>
 394
 395     <para>This section covers changes to kernel configurations, system
 396       tuning, and system control parameters that are not otherwise
 397       categorized.</para>
 398
 399     <sect2 xml:id="kernel-bugfix">
 400       <title>Kernel Bug Fixes</title>
 401
 402       <para revision="317434">The &man.ipf.4; packet filter has been
 403         updated to prevent <literal>keep state</literal> from
 404         incorrectly implying <literal>keep frags</literal>, matching
 405         the behavior documented in &man.ipf.5;.</para>
 406     </sect2>
 407
 408     <sect2 xml:id="kernel-config">
 409       <title>Kernel Configuration</title>
 410
 411       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 412         <literal>IPSEC_NAT_T</literal> kernel configuration option has
 413         been removed.  Support for <acronym>NAT-T</acronym> is now
 414         enabled by default.</para>
 415
 416       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 417         <literal>IPSEC_FILTERTUNNEL</literal> kernel option has been
 418         removed, which was deprecated by the
 419         <literal>net.inet.ipsec.filtertunnel</literal> sysctl.</para>
 420     </sect2>
 421
 422     <sect2 xml:id="kernel-modules">
 423       <title>Kernel Modules</title>
 424
 425       <para revision="307144">&man.cloudabi.4; has been updated to
 426         allow running 32-bit binaries within 64-bit userland
 427         environments when the kernel configuration file has the
 428         <literal>COMPAT_CLOUDABI32</literal> option present.</para>
 429
 430       <para revision="315514" contrib="sponsor" sponsor="&yandex;">The
 431         <literal>ipsec</literal> and <literal>tcpmd5</literal> kernel
 432         modules have been added.</para>
 433
 434       <para revision="316274" contrib="sponsor" sponsor="&yandex;">The
 435         &man.ipfw.4; packet filter has been updated to add support for
 436         named dynamic states.</para>
 437
 438       <para revision="316444" contrib="sponsor" sponsor="&yandex;">The
 439         <literal>ipfw_nptv6</literal> kernel module has been added,
 440         implementing Network Prefix Translation for
 441         <acronym>IPv6</acronym> as defined in <acronym>RFC</acronym>
 442         6296.</para>
 443
 444       <para revision="316446" contrib="sponsor" sponsor="&yandex;">The
 445         <literal>ipfw_nat64</literal> kernel module has been added,
 446         implementing stateless and stateful
 447         <acronym>NAT64</acronym>.</para>
 448
 449       <para revision="316660" contrib="sponsor" sponsor="&ff;">The
 450         &man.cfumass.4; device has been added, providing a storage
 451         frontend to <acronym>USB</acronym>
 452         <acronym>OTG</acronym>-capable hardware.</para>
 453
 454       <para revision="317045" contrib="sponsor" sponsor="&yandex;">The
 455         <literal>ipfw_pmod</literal> kernel module has been added,
 456         designed for modifying packets of any protocol.</para>
 457
 458       <note>
 459         <para>At present, only <acronym>TCP</acronym>
 460           <acronym>MSS</acronym> modification is implemented.</para>
 461       </note>
 462     </sect2>
 463
 464     <sect2 xml:id="kernel-sysctl">
 465       <title>System Tuning and Controls</title>
 466
 467       <para revision="315539">The
 468         <literal>vfs.root_mount_always_wait</literal> tunable has been
 469         added, which forces the kernel to wait for root mount holds
 470         even if the root device is already present.</para>
 471
 472       <para revision="316120" contrib="sponsor"
 473         sponsor="&dellemc;">When the system real time clock
 474         (<acronym>RTC</acronym>) is adjusted, such as by
 475         <function>clock_settime()</function>, sleeping threads are now
 476         awakened and absolute sleep times are reevaluated based on the
 477         new value of the RTC.</para>
 478     </sect2>
 479   </sect1>
 480
 481   <sect1 xml:id="drivers">
 482     <title>Devices and Drivers</title>
 483
 484     <para>This section covers changes and additions to devices and
 485       device drivers since &release.prev;.</para>
 486
 487     <sect2 xml:id="drivers-device">
 488       <title>Device Drivers</title>
 489
 490       <para revision="307768">The &man.jedec.ts.4; driver has been
 491         added, providing support for thermal sensors on memory
 492         modules.  The driver currently supports chips that are fully
 493         compliant with the <acronym>JEDEC</acronym>
 494         <acronym>JC</acronym> 42.4 specification.</para>
 495
 496       <para revision="308104">The &man.chromebook.platform.4; driver
 497         has been added, providing support for various Chromebook
 498         models.</para>
 499
 500       <para revision="308942">The &man.bytgpio.4; driver has been
 501         added, providing support for Intel&reg; Bay&nbsp;Trail&trade;
 502         SoC GPIO controllers.</para>
 503
 504       <para revision="312394"><filename>/dev/kmem</filename> no longer
 505         supports access via <function>mmap()</function>.  Consumers
 506         wishing to use <filename>/dev/kmem</filename> must use
 507         <function>read()</function> and
 508         <function>write()</function>.</para>
 509
 510       <para revision="306533" contrib="sponsor"
 511         sponsor="&chelsio;">&man.devctl.8; now supports a &quot;clear
 512         driver&quot; command as a complement to &quot;set
 513         driver&quot;.</para>
 514     </sect2>
 515
 516     <sect2 xml:id="drivers-storage">
 517       <title>Storage Drivers</title>
 518
 519       <para>&nbsp;</para>
 520     </sect2>
 521
 522     <sect2 xml:id="drivers-network">
 523       <title>Network Drivers</title>
 524
 525       <para revision="306660" contrib="sponsor"
 526         sponsor="&chelsio;">The &man.cxgbe.4; has been updated to
 527         provide support for Virtual Function devices
 528         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 529
 530       <para revision="306661" contrib="sponsor"
 531         sponsor="&chelsio;">TCP connections using the TCP Offload
 532         Engine (<acronym>TOE</acronym>) on Chelsio T4+ adapters can
 533         now perform zero-copy sends via
 534         <function>aio_write()</function>.</para>
 535
 536       <para revision="306664" contrib="sponsor"
 537         sponsor="&chelsio;">The &man.cxgbev.4; has been added,
 538         providing support for Virtual Function devices
 539         (<acronym>VFs</acronym>) on Chelsio T4 and T5 adapters.</para>
 540
 541       <para revision="309377" contrib="sponsor"
 542         sponsor="&broadcom;">The &man.bnxt.4; driver has been added,
 543         providing support for Broadcom&reg; NetXtreme-C&trade; and
 544         NetXtreme-E&trade; devices.</para>
 545
 546       <para revision="309560" contrib="sponsor"
 547         sponsor="&chelsio;">The &man.cxgbe.4; driver now supports
 548         devices using T6-based adapters which support 10, 25, 40, and
 549         100 Gbps.</para>
 550
 551       <para revision="309560" contrib="sponsor"
 552         sponsor="&chelsio;">The &man.cxgbe.4; has been updated to
 553         provide support for Virtual Function devices
 554         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 555
 556       <para revision="309560" contrib="sponsor"
 557         sponsor="&chelsio;">The &man.cxgbev.4; has been updated to
 558         provide support for Virtual Function devices
 559         (<acronym>VFs</acronym>) on Chelsio T6 adapters.</para>
 560
 561       <para revision="310852" contrib="sponsor"
 562         sponsor="&netgate;">The &man.miibus.4; driver has been updated
 563         to support Microchip/Micrel KSZ9031 Gigabit ethernet
 564         cards.</para>
 565
 566       <para revision="311506" contrib="sponsor"
 567         sponsor="&chelsio;">The &man.cxgbe.4; driver has been updated
 568         to firmware version 1.16.26.0 for T4, T5, and T6 cards.</para>
 569
 570       <para revision="312358">The &man.alc.4; driver has been updated
 571         to provide support for Atheros&reg; Killer&nbsp;E2400&trade;
 572         Gigabit ethernet cards.</para>
 573
 574       <para revision="314005" contrib="sponsor" sponsor="&ms;">The
 575         &man.alc.4; driver has been updated to provide support for
 576         Atheros&reg; Killer&nbsp;E2500&trade; Gigabit ethernet
 577         cards.</para>
 578
 579       <para revision="315330" contrib="sponsor"
 580         sponsor="&netgate;">The &man.etherswitch.4; driver has been
 581         updated to support RTL8366RB and RTL8366SR cards.</para>
 582
 583       <para revision="317116">The &man.qlnxe.4; driver has been added,
 584         providing support for Cavium&reg; Qlogic&trade; 45000 Series
 585         adapters.</para>
 586
 587       <para revision="317182">The &man.qlxgbe.4; firmware has been
 588         updated to version 5.4.64.</para>
 589
 590       <para revision="318357" contrib="sponsor"
 591         sponsor="&intelcorp;">The &man.ixl.4; driver has been updated
 592         to version 1.7.12-k.</para>
 593     </sect2>
 594   </sect1>
 595
 596   <sect1 xml:id="hardware">
 597     <title>Hardware Support</title>
 598
 599     <para>This section covers general hardware support for physical
 600       machines, hypervisors, and virtualization environments, as well
 601       as hardware changes and updates that do not otherwise fit in
 602       other sections of this document.</para>
 603
 604     <sect2 xml:id="hardware-support">
 605       <title>Hardware Support</title>
 606
 607       <para revision="307576">The &man.atkbdc.4; driver has been
 608         updated to provide support for Elantech&reg; trackpads.  To
 609         enable hardware support, add
 610         <literal>hw.psm.elantech_support=1</literal> to
 611         &man.loader.conf.5;.</para>
 612     </sect2>
 613
 614     <sect2 xml:id="hardware-virtualization">
 615       <title>Virtualization Support</title>
 616
 617       <para revision="306471" contrib="sponsor"
 618         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 619         &man.bhyve.4; supports more dynamic configurations permitting
 620         devices to be marked for passthrough or host use at
 621         runtime.</para>
 622
 623       <para revision="306520" contrib="sponsor"
 624         sponsor="&chelsio;"><acronym>PCI</acronym> passthrough with
 625         &man.bhyve.4; resets functions via <acronym>FLR</acronym> when
 626         a virtual machine is started and stopped.</para>
 627     </sect2>
 628
 629     <sect2 xml:id="hardware-arm">
 630       <title>ARM Support</title>
 631
 632       <para revision="305436">Support for the Allwinner A13 board has
 633         been added.</para>
 634     </sect2>
 635   </sect1>
 636
 637   <sect1 xml:id="storage">
 638     <title>Storage</title>
 639
 640     <para>This section covers changes and additions to file systems
 641       and other storage subsystems, both local and networked.</para>
 642
 643     <sect2 xml:id="storage-general">
 644       <title>General Storage</title>
 645
 646       <para>&nbsp;</para>
 647     </sect2>
 648
 649     <sect2 xml:id="storage-net">
 650       <title>Networked Storage</title>
 651
 652       <para>&nbsp;</para>
 653     </sect2>
 654
 655     <sect2 xml:id="storage-zfs">
 656       <title>ZFS</title>
 657
 658       <para>&nbsp;</para>
 659     </sect2>
 660
 661     <sect2 xml:id="storage-geom">
 662       <title><literal>geom(4)</literal></title>
 663
 664       <para>&nbsp;</para>
 665     </sect2>
 666   </sect1>
 667
 668   <sect1 xml:id="boot">
 669     <title>Boot Loader Changes</title>
 670
 671     <para>This section covers the boot loader, boot menu, and other
 672       boot-related changes.</para>
 673
 674     <sect2 xml:id="boot-loader">
 675       <title>Boot Loader Changes</title>
 676
 677       <para revision="307632" contrib="sponsor" sponsor="&gandi;">The
 678         <acronym>EFI</acronym> loader has been updated to support
 679         <acronym>TFTPFS</acronym>, providing netboot support without
 680         requiring an <acronym>NFS</acronym> server.</para>
 681     </sect2>
 682
 683     <sect2 xml:id="boot-menu">
 684       <title>Boot Menu Changes</title>
 685
 686       <para>&nbsp;</para>
 687     </sect2>
 688   </sect1>
 689
 690   <sect1 xml:id="network">
 691     <title>Networking</title>
 692
 693     <para>This section describes changes that affect networking in
 694       &os;.</para>
 695
 696     <sect2 xml:id="network-general">
 697       <title>General Network Changes</title>
 698
 699       <para revision="311681" contrib="sponsor" sponsor="&yandex;">The
 700         network stack has been updated to include
 701         <function>ip6_tryforward()</function>, providing performance
 702         benefits as result of a reduced number of checks.</para>
 703
 704       <para revision="313523" contrib="sponsor"
 705         sponsor="&dellemc;">The network stack has been modified to fix
 706         incorrect or invalid <acronym>IP</acronym> addresses if
 707         multiple threads emit a <acronym>UDP</acronym>
 708         <literal>log_in_vain</literal> message concurrently.</para>
 709
 710       <para revision="317386" contrib="sponsor"
 711         sponsor="&multiplay;">The <acronym>TCP</acronym> stack has
 712         been changed to use the estimated <acronym>RTT</acronym>
 713         instead of timestamps for receive buffer auto resizing.</para>
 714     </sect2>
 715
 716     <sect2 xml:id="network-protocols">
 717       <title>Network Protocols</title>
 718
 719       <para revision="309337" contrib="sponsor"
 720         sponsor="&dellemc;">Support for <acronym>GARP</acronym>
 721         retransmit has been added.  A new &man.sysctl.8;,
 722         <literal>net.link.ether.inet.garp_rexmit_count</literal>, has
 723         been added, which sets the maximum number of retransmissions
 724         when set to a non-zero value.</para>
 725
 726       <para revision="315514" contrib="sponsor"
 727         sponsor="&yandex;">Support for the
 728         <literal>UDP_ENCAP_ESPINUDP_NON_IKE</literal> encapsulation
 729         type has been removed.</para>
 730     </sect2>
 731   </sect1>
 732
 733   <sect1 xml:id="ports">
 734     <title>Ports Collection and Package Infrastructure</title>
 735
 736     <para>This section covers changes to the &os;&nbsp;Ports
 737       Collection, package infrastructure, and package maintenance and
 738       installation tools.</para>
 739
 740     <sect2 xml:id="ports-infrastructure">
 741       <title>Infrastructure Changes</title>
 742
 743       <para>&nbsp;</para>
 744     </sect2>
 745
 746     <sect2 xml:id="ports-packages ">
 747       <title>Packaging Changes</title>
 748
 749       <para>&nbsp;</para>
 750     </sect2>
 751   </sect1>
 752
 753   <sect1 xml:id="doc">
 754     <title>Documentation</title>
 755
 756     <para>This section covers changes to the &os;&nbsp;Documentation
 757       Project sources and toolchain.</para>
 758
 759     <sect2 xml:id="doc-sources">
 760       <title>Documentation Source Changes</title>
 761
 762       <para>&nbsp;</para>
 763     </sect2>
 764
 765     <sect2 xml:id="doc-toolchain">
 766       <title>Documentation Toolchain Changes</title>
 767
 768       <para>&nbsp;</para>
 769     </sect2>
 770   </sect1>
 771
 772   <sect1 xml:id="releng">
 773     <title>Release Engineering and Integration</title>
 774
 775     <para>This section convers changes that are specific to the
 776       &os;&nbsp;Release Engineering processes.</para>
 777
 778     <sect2 xml:id="releng-changes">
 779       <title>Integration Changes</title>
 780
 781       <para>&nbsp;</para>
 782     </sect2>
 783   </sect1>
 784 </article>