The &os; Project $FreeBSD$ 2017 The &os; Documentation Project &tm-attrib.freebsd; &tm-attrib.ibm; &tm-attrib.ieee; &tm-attrib.intel; &tm-attrib.sparc; &tm-attrib.general; 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. 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;. 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 &release.url;. 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 &release.url;. This distribution of &os; &release.current; is a &release.type; distribution. It can be found at &release.url; or any of its mirrors. More information on obtaining this (or other) &release.type; distributions of &os; can be found in the Obtaining &os; appendix to the &os; Handbook. All users are encouraged to consult the release errata before installing &os;. The errata document is updated with late-breaking 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. This document describes the most user-visible new or changed features in &os; since &release.prev;. 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. 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 GENERIC 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. Source-based upgrades (those based on recompiling the &os; base system from source code) from previous versions are supported, according to the instructions in /usr/src/UPDATING. Upgrading &os; should only be attempted after backing up all data and configuration files. This section lists the various Security Advisories and Errata Notices since &release.prev;. &security; &errata; This section covers changes and additions to userland applications, contributed software, and system utilities. The &man.inetd.8; utility is now built without libwrap support when WITHOUT_TCP_WRAPPERS is set in &man.src.conf.5;. The &man.libthr.3; library and related files are now evaluated and removed by the delete-old-libs target when upgrading the system if WITHOUT_LIBTHR is set in &man.src.conf.5;. The &man.zfsbootcfg.8; utility has been added, providing one-time &man.boot.config.5;-style options for &man.zfsboot.8;. Subversion has been updated to version 1.9.5. &man.file.1; has been updated to version 5.29. The &man.amd.8; utility has been updated to version 6.2. &man.xz.1; has been updated to version 5.2.3. &man.zlib.3; has been updated to version 1.2.11. &man.libarchive.3; has been updated to version 3.3.1. &man.ntpd.8; has been updated to version 4.2.8p10. Timezone data files have been updated to version 2017b. &man.tcsh.1; has been updated to version 6.20.00.           This section covers changes to kernel configurations, system tuning, and system control parameters that are not otherwise categorized. The &man.ipf.4; packet filter has been updated to prevent keep state from incorrectly implying keep frags, matching the behavior documented in &man.ipf.5;.   This section covers changes and additions to devices and device drivers since &release.prev;.   The &man.cxgbe.4; driver has been updated to firmware version 1.16.26.0 for T4, T5, and T6 cards. The &man.alc.4; driver has been updated to provide support for Atheros® Killer E2400™ Gigabit ethernet cards. The &man.alc.4; driver has been updated to provide support for Atheros® Killer E2500™ Gigabit ethernet cards. The &man.qlnxe.4; driver has been added, providing support for Cavium® Qlogic™ 45000 Series adapters. 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.     This section covers changes and additions to file systems and other storage subsystems, both local and networked.       This section covers the boot loader, boot menu, and other boot-related changes.     This section describes changes that affect networking in &os;. Support for GARP (gratuitous ARP) retransmit has been added. A new &man.sysctl.8;, net.link.ether.inet.garp_rexmit_count, has been added, which sets the maximum number of retransmissions when set to a non-zero value. This section covers changes to the &os; Ports Collection, package infrastructure, and package maintenance and installation tools.     This section covers changes to the &os; Documentation Project sources and toolchain.     This section convers changes that are specific to the &os; Release Engineering processes.