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Release history

GNS3 releases

GNS3 Graphical Network Simulator

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v2.2.60 Mixed

Live capture + Import fix + RNG addition

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v2.2.59 Breaking risk
⚠ Upgrade required
  • Warning: Use 64‑bit IOU images; 32‑bit support is removed
Breaking changes
  • Removed support for 32‑bit IOU images in the GNS3 VM
Notable features
  • --title option added to remote-viewer console commands
  • Fixes remaining PyQt6 compatibility issues
Full changelog

GUI

  • Remove psutil version check
  • Fix remaining PyQt6 compatibility issues. Fixes #3822
  • Add --title to remote-viewer console commands. Fixes #3783
  • Fix deleting drawings. Ref #3810

Server

  • Sync appliances
  • Fix snapshot restore does not work after export/import of project
  • Warn to use 64-bit IOU images. Fixes #2716 32-bit IOU image support has been removed from the GNS3 VM.
  • Fix telnet console silent-proxy hang on non-ConnectionError exit (#2344)
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v2.2.58.1 Bugfix

**GUI** * Fix callback issues in found in v2.2.58 **Server** * Sync appliances

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v2.2.57 New feature
Notable features
  • dark style support
  • Multi VNC tab handling in Superputty
  • improved telnet server error handling
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v3.0.6 New feature
Notable features
  • PyQt6 migration completion
  • XDG Config Home support
  • Python 3.14 support
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v2.2.56 Bug fix

Patches PyQt6 migration with tab name fixes and XDG Config Home support. Sets default udhcpc location and upgrades dependencies.

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Beta — feedback welcome: [email protected]