You can request a feature or track an issue in GENIVI's JIRA tracker for DLT here https://at.projects.genivi.org/jira/projects/DLT/summary
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- DLT in TIZEN wiki
- DLT-T – a transport protocol (segmented messages) that was proposed for larger DLT messages. It is not currently used in DLT but could be a general-purpose transport protocol for many purposes.