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title: "FreeBSD 9.2-RELEASE Release Notes"
sidenav: download
---

include::shared/en/urls.adoc[]

= FreeBSD 9.2-RELEASE Release Notes

== Release Highlights

The highlights in the 9.2-RELEASE include the following.

* Support for man:rarpd[8] added to man:vlan[4]. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=245076[r245076]]
* man:xz[1] updated to version 5.0.4. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=245128[r245128]]
* The ZFS filesystem now supports TRIM when used on solid state drives. ZFS TRIM support is enabled by default. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=251419[r251419]] The following tunables have been added:
** `vfs.zfs.trim.enabled`: Enable ZFS TRIM
** `vfs.zfs.trim.max_interval`: Maximum interval in seconds between TRIM queue processing
** `vfs.zfs.trim.timeout`: Delay TRIMs by up to this many seconds
** `vfs.zfs.trim.txg_delay`: Delay TRIMs by up to this many TXGs
* The man:firewire[4] drivers have been removed from the GENERIC kernel configuration for all architectures. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=246321[r246321]]
* man:awk[1] has been updated to version 20121220. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=246373[r246373]]
* The man:virtio[4] drivers have been added to the GENERIC kernel configuration for amd64 and i386 architectures. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=247306[r247306]]
* The ZFS filesystem now supports lz4 compression. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=247309[r247309]]
* The man:oce[4] has been updated to version 4.6.95.0. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=248062[r248062]]
* *OpenSSL* has been updated to version 0.9.8y. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=248272[r248272]]
* The man:bsdinstall[8] installer now supports installation over HTTP. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=248313[r248313]]
* *DTrace* hooks have been enabled by default in the GENERIC kernel. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=249549[r249549]]
* *DTrace* has been updated to version 1.9.0. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=249856[r249856]]
* *Sendmail* has been updated to version 8.14.7. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=r249865[r249865], http://svn.FreeBSD.org/viewvc/base?view=revision&revision=r249866[r249866], http://svn.FreeBSD.org/viewvc/base?view=revision&revision=r249867[r249867], http://svn.FreeBSD.org/viewvc/base?view=revision&revision=r249875[r249875]]
* *OpenSSH* has been updated to version 6.2p2. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=251135[r251135]]
* man:less[1] has been updated to version 458. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=251154[r251154]]
* Add ATA pass-through support to man:cam[4]. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=251302[r251302]]
* Implement new man:rc.conf[5] syntax for man:hostapd[8]. The new format is: `ifconfig_wlanX="HOSTAP"`, where `X` represents the man:wlan[4] interface. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252748[r252748]]
* Import unmapped I/O support from `head/`. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=251897[r251897]]
* Merge man:nvme[4] from `head/`. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252222[r252222]]
* Add support for the Chelsio 40G T5. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252495[r252495]]
* Add a tunable to increase the initial TCP congestion window from 4 segments to 10 segments. This tunable can be enabled by adding `net.inet.tcp.experimental.initcwnd10=1` to man:sysctl.conf[5]. This tunable is turned off by default in FreeBSD 9.2-RELEASE. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252789[r252789]]
* Update the man:ixgbe[4] driver. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252898[r252898]]
* Update the Intel e1000 driver. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252899[r252899]]
* Add support for the HighPoint DC Series Data Center HBA (DC7280 and R750). [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=252903[r252903]]
* Add service-specific man:setfib[1] support. This is enabled by setting: `<name>_fib` in man:rc.conf[5].[http://svn.FreeBSD.org/viewvc/base?view=revision&revision=253233[r253233]]
* Update devices supported by man:cxgbe[4]. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=253776[r253776]]
* Remove man:ctl[4] from the GENERIC kernel configuration. [http://svn.FreeBSD.org/viewvc/base?view=revision&revision=253860[r253860]]