RHBA-2010:0456 - Bug Fix Advisory

Topic

An updated xen package that fixes a problem with broadcast packets not
travelling from dom0 to domU instances is now available.

Description

Xen is a high performance and secure open source virtualization framework.
Virtualization allows users to run guest operating systems in virtual
machines on top of a host operating system.

These updated xen packages fix the following bug:

• when the xen bridge ran on an arp-monitored bond device, the local

routing table did not properly flush IP addresses. Consequently, broadcast
packets sent from dom0 were not received by domUs running on the same
system. With this update the routing table is cleaned up properly and
packets from dom0 are received by domU instances as expected. (BZ#592219)

All Xen users, particularly those running guest instances of Windows,
should install this update, which addresses this issue.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 592219 - Broadcast packets from dom0 does not reach domUs under Xen with bonding configuration

CVEs

(none)

References

(none)