# UnetStack v3.4.0 Release Notes

## New features

- User customizable logging setup on UnetStack-based modems (honors logging.properties file in scripts directory)
- Allow list of closures for stack setup in simulation scripts

## Improvements & bug fixes

- Fixed bug in JANUS implementation that caused hop sequence to be reset after preamble
- Avoid sending ParamChangeNtf when the node.location parameter is written to, but remains unchanged
- Increase resolution of voltage reporting on UnetStack-based modems
- Improve wav file loading speed for large wav files
- Improved handling of broadcast and multicast UDP links in UDPLink
- Stability improvements in ECLink, Ranging and UDPLink agents
- Web interface improvements and stability fixes for large file upload/download