ns-3.46 was released on October 1, 2025 (and updated by ns-3.46.1 on October 16, 2025), due to contributions from seventeen authors. This release adds Zigbee groupcast and APS layer support, a new wraparound interference model for the spectrum channel framework, and a new static Wi-Fi helper to optionally bypass some management frame exchanges at the start of simulations. 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 release of ns-allinone-3.46 will be posted by the end of October. This release will be idential to ns-3.46 with the addition of contributed modules from the ns-3 App Store and is intended for users interested in more simulation models.

Download

Users are recommended to download the ns-3.46.1 minor release, available from this link. This updates ns-3.46 to address some build system issues that were fixed shortly after ns-3.46’s release. This download is a source archive that contains the mainline source code.

The original ns-3.46 release download is available from this link.

Documentation

The documentation is available in several formats from this link.

• What has changed since ns-3.45? 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-3.45 to ns-3.46 can be found here

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