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&os; &release.current; Release Notes 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. Introduction 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. Upgrading from Previous Releases of &os; 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. Security and Errata This section lists the various Security Advisories and Errata Notices since &release.prev;. Security Advisories &security; Errata Notices &errata; Userland This section covers changes and additions to userland applications, contributed software, and system utilities. Userland Configuration Changes 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 WITH_RPCBIND_WARMSTART_SUPPORT &man.src.conf.5; knob has been added, which when enabled allows building &man.rpcbind.8; with warmstart support. Userland Application Changes The &man.truss.1; utility has been updated to include the -H flag, which logs the thread ID of a thread invoking a system call. The &man.zfsbootcfg.8; utility has been added, providing one-time &man.boot.config.5;-style options for &man.zfsboot.8;. The &man.cxgbetool.8; utility has been added, providing command-line access to features and debugging facilities of &man.cxgbe.4; devices. The &man.rcp.1;, &man.rlogin.1;, - &man.rsh.1;, &man.ruptime.1;, &man.rwho.1;, &man.rlogind.8;, - &man.rshd.8;, and &man.rwhod.8; utilities have been marked as - deprecated, and planned for removal in + &man.rsh.1;, &man.rlogind.8;, and &man.rshd.8; utilities have + been marked as deprecated, and planned for removal in &os; 12.0-RELEASE. The &man.gdb.1; and &man.kgdb.1; utilities have been marked as deprecated, and planned for removal from the base system in the future. A newer version is available in the devel/gdb port. The &man.cron.8; utility has been updated to add support for including files within /etc/cron.d and /usr/local/etc/cron.d by default. The &man.syslogd.8; utility has been updated to add the include keyword which allows specifying a directory containing configuration files to be included in addition to &man.syslog.conf.5;. The default &man.syslog.conf.5; has been updated to include /etc/syslog.d and /usr/local/etc/syslog.d by default. The &man.newsyslog.8; utility has been updated to support logging to &man.syslogd.8; in a format compliant with RFC5424. For more details, see the description for the T flag in &man.newsyslog.conf.5;. Contributed Software 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.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. &man.libarchive.3; has been updated to version 3.3.2. bmake has been updated to version 20170720. Installation and Configuration Tools The default EFI partition created by &man.bsdinstall.8; has been increased from 800KB to 200MB. <filename class="directory">/etc/rc.d</filename> Scripts   <filename class="directory">/etc/periodic</filename> Scripts   Runtime Libraries and API The &man.kvm.close.3; function has been updated to return the accumulated error from previous &man.close.2; calls. ABI Compatibility The type max_align_t is now defined for C11 compliance. Userland Debugging &man.ptrace.2; now supports events for thread creation and destruction, permitting more reliable debugging of threaded processes. &man.ptrace.2; now supports events for &man.vfork.2;, permitting reliable debugging across &man.vfork.2; invocations. Process core dumps now include the process ID (PID) and command line arguments. Kernel This section covers changes to kernel configurations, system tuning, and system control parameters that are not otherwise categorized. Miscellaneous Kernel Changes The &man.vt.4; driver has been updated, increasing the maximum framebuffer size. Kernel Bug Fixes 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;. Kernel Configuration   System Tuning and Controls The kern.features.linux and kern.features.linux64 flags have been added to the kern.features &man.sysctl.8;, which when set to 1, indicate the kernel is configured with compatibility for 32-bit and/or 64-bit linux binaries, respectively. Devices and Drivers This section covers changes and additions to devices and device drivers since &release.prev;. Device Drivers &man.devctl.8; now supports a "clear driver" command as a complement to "set driver". Storage Drivers The &man.mpr.4; driver has been updated to support tri-mode (SAS/SATA/PCIe) Broadcom® storage adapters. The &man.arcmsr.4; driver has been updated to version 1.40.00.00, adding support for ARC-1884 SATA controllers. Network Drivers The &man.cxgbev.4; driver has been added, providing support for Virtual Function devices (VFs) on Chelsio T4 and T5 adapters. The &man.cxgbe.4; driver has been updated to provide support for Virtual Function devices (VFs) on Chelsio T6 adapters. The &man.cxgbe.4; driver now supports devices using T6-based adapters which support 10, 25, 40, and 100 Gbps. 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. The &man.cxgbe.4; driver has been updated to firmware version 1.16.45.0 for T4, T5, and T6 cards. Hardware Support 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. Hardware Support   Virtualization Support PCI passthrough with &man.bhyve.4; resets functions via FLR when a virtual machine is started and stopped. PCI passthrough with &man.bhyve.4; supports more dynamic configurations permitting devices to be marked for passthrough or host use at runtime. ARM Support   Storage This section covers changes and additions to file systems and other storage subsystems, both local and networked. General Storage   Networked Storage The NFS client now properly handles NFS4ERR_BAD_SESSION errors received from an NFS server. Additionally, the kernel RPC client has been updated to prevent creating new TCP connections when ERESTART is received from &man.sosend.9;. The NFS client has been updated to support pNFS commit through the DS. ZFS &man.geom.4;   Boot Loader Changes This section covers the boot loader, boot menu, and other boot-related changes. Boot Loader Changes   Boot Menu Changes   Networking This section describes changes that affect networking in &os;. General Networking Changes The network stack has been modified to fix incorrect or invalid IP addresses if multiple threads emit a UDP log_in_vain message concurrently. The TCP stack has been changed to use the estimated RTT instead of timestamps for receive buffer auto resizing. Network Protocols 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. Ports Collection and Package Infrastructure This section covers changes to the &os; Ports Collection, package infrastructure, and package maintenance and installation tools. Infrastructure Changes   Packaging Changes   Documentation This section covers changes to the &os; Documentation Project sources and toolchain. Documentation Source Changes   Documentation Toolchain Changes   Release Engineering and Integration This section convers changes that are specific to the &os; Release Engineering processes. Integration Changes