OpenBSD 5.1 Released
As usual, six months after the release of OpenBSD 5.0, the OpenBSD project officially released OpenBSD 5.1.
The new release comes with some improved hardware supports, including support for new Intel Sandy Bridge integrated graphics cards and Intel 82580, support for Synaptics touch pads, MegaRAID 9240, Nuvoton NCT6776F, Centrino Advanced-N 6205 and more.
The generic network stacks also have been improved including the improved IPv6 fragment handling, initial rdomains support for IPv6 and improvements for CARP (common address redundancy protocol).
In the routing daemons and other user land network, traceroute and traceroute6 can now look up ASN (AS Number) for each hop, fstat and ps can now display routing table ID.
The PF (packet filtering) tool now supports NAT64 using af-to keyword. It also has been improved for IPv6 fragment handling. pfctl now can print port numbers instead of service names by default.
For detail about the what’s new in the OpenBSD 5.1 release, you can find it here.
How to upgrade to OpenBSD 5.1?
If you already have OpenBSD 5.0 installed in your server, you can upgrade it to OpenBSD 5.1.
Note that upgrades are only supported from one release to the release immediately following it. It means that if you currently have OpenBSD 4.9, you need to upgrade it first to 5.0 and then upgrade it to OpenBSD 5.1. You can not directly upgrade from version 4.9 to 5.1. Follow this guide to upgrade from OpenBSD 5.0 to 5.1.