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DHCP 3.1-ESV-R3 Release Notes
Author: Reference Number: AA-00430 Views: 6158 Created: 2011-08-10 12:41 Last Updated: 2011-09-08 23:59 0 Rating/ Voters


Version 3.1-ESV-R3 is an extended support version (ESV) release of DHCP 3.1.  ESVs are intended for users who have longer upgrade constraints.  Please see our web page for more information on ESVs.

This document summarizes changes from DHCP  3.1-ESV-R1 to DHCP 3.1-ESV-R3. Please see the CHANGES file in the source code release for a complete list of all changes.


The latest release of ISC DHCP  software can always be found on our web site at There you will find additional information about each release, source code, and some pre-compiled versions for certain operating systems.


Product support information is available on for paid support options. Free support is provided by our user community via a mailing list. Information on all public email lists is available at

New Features

No new features were added to this ESV release.

Security Fixes

! Two packets were found that cause a server to halt.  The code  has been updated to properly process or reject the packets as  appropriate.  Thanks to David Zych at University of Illinois  for reporting this issue.  [ISC-Bugs #24960]  One CVE number for each class of packet.  CVE-2011-2748  CVE-2011-2749

Thank You

Thank you to everyone who assisted us in making this release possible. If you would like to contribute to ISC to assist us in continuing to make quality open source software, please visit our donations page at For information on how to install, configure and run this software, as well as how to find documentation and report bugs, please consult the README file.

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For assistance with problems and questions for which you have not been able to find an answer in our Knowledge Base, we recommend searching our community mailing list archives and/or posting your question there (you will need to register there first for your posts to be accepted). The bind-users and the dhcp-users lists particularly have a long-standing and active membership.

ISC relies on the financial support of the community to fund the development of its open source software products. If you would like to support future product evolution and maintenance as well having peace of mind knowing that our team of experts are poised to provide you with individual technical assistance whenever you call upon them, then please consider our Professional Subscription Support services - details can be found on our main website.

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