FreeBSD 10.3-STABLE Release Notes

The FreeBSD Project

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Last modified on 2017-06-05 18:54:53 by gjb.

The release notes for FreeBSD 10.3-STABLE contain a summary of the changes made to the FreeBSD base system on the 10.3-STABLE development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the FreeBSD kernel and userland. Some brief remarks on upgrading are also presented.

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Table of Contents
1. Introduction
2. Upgrading from Previous Releases of FreeBSD
3. Security and Errata
3.1. Security Advisories
3.2. Errata Notices
4. Userland
4.1. Userland Configuration Changes
4.2. Userland Application Changes
4.3. Contributed Software
4.4. Installation and Configuration Tools
4.5. /etc/rc.d Scripts
4.6. /etc/periodic Scripts
4.7. Runtime Libraries and API
4.8. ABI Compatibility
4.9. Userland Debugging
5. Kernel
5.1. Kernel Bug Fixes
5.2. Kernel Configuration
5.3. System Tuning and Controls
6. Devices and Drivers
6.1. Device Drivers
6.2. Storage Drivers
6.3. Network Drivers
7. Hardware Support
7.1. Hardware Support
7.2. Virtualization Support
7.3. ARM Support
8. Storage
8.1. General Storage
8.2. Networked Storage
8.3. ZFS
8.4. geom(4)
9. Boot Loader Changes
9.1. Boot Loader Changes
9.2. Boot Menu Changes
10. Networking
10.1. General Networking Changes
10.2. Network Protocols
11. Ports Collection and Package Infrastructure
11.1. Infrastructure Changes
11.2. Packaging Changes
12. Documentation
12.1. Documentation Source Changes
12.2. Documentation Toolchain Changes
13. Release Engineering and Integration
13.1. Integration Changes

1. Introduction

This document contains the release notes for FreeBSD 10.3-STABLE. It describes recently added, changed, or deleted features of FreeBSD. It also provides some notes on upgrading from previous versions of FreeBSD.

The snapshot distribution to which these release notes apply represents a point along the 10.3-STABLE development branch between 10.3-RELEASE and the future 10.3-RELEASE. Information regarding pre-built, binary snapshot distributions along this branch can be found at

All users are encouraged to consult the release errata before installing FreeBSD. 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 FreeBSD 10.3-STABLE can be found on the FreeBSD Web site.

This document describes the most user-visible new or changed features in FreeBSD since 10.3-RELEASE.

Typical release note items document recent security advisories issued after 10.3-RELEASE, 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 FreeBSD between releases; this document focuses primarily on security advisories, user-visible changes, and major architectural improvements.

All FreeBSD documents are available for download at

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