ns-3.45 was released on June 1, 2025, due to contributions from thirteen authors. This release features the addition of a new DHCPv6 model and continued support for Wi-Fi 802.11be, including 320 MHz channel support and EMLSR model improvements. See the file CHANGES.md for changed model behavior and build system aspects. Several improvements and bug fixes are listed in the RELEASE_NOTES and CHANGES files.

A follow-on release of ns-allinone-3.45 was posted on August 17, 2025. This release is idential to ns-3.45 with the addition of nine contributed modules from the ns-3 App Store and is intended for users interested in more simulation models.

Download

The ns-3.45 release download is available from this link. This download is a source archive that contains the mainline source code.

The ns-allinone-3.45 release download is available from this link. This download extends the above ns-3.45 release with additional contributed modules.

Documentation

The documentation is available in several formats from this link.

• What has changed since ns-3.44? Consult the changes and RELEASE_NOTES pages.
• Errata containing any late-breaking information about the release can be found here
• A patch to upgrade from ns-3.44 to ns-3.45 can be found here

Documentation for contributed modules is not hosted on the ns-3 web site.