Latest revision as of 15:12, 8 June 2025

Project Overview

Project Name: 6LoWPAN Neighbor Discovery Protocol
Student: Boh Jie Qi
Mentors: Tommaso Pecorella and Adnan Rashid
Google page: link
Proposal: link
Project Goals: The 6LoWPAN-ND (RFCs 4944, 6775, and 8505) is a replacement for IPv6 DAD and NDP for 6LoWPAN networks, and it is important to ensure address uniqueness across a network that can potentially use different MAC/PHY layers. There is a model for 6LoWPAN-ND, but it is still not merged in the main ns-3 branch. The goal is to clean up the implementation, remove an actual limitation due to a questionable assumption, and to add the support for multi-hop operations (EDAR and EDAC messages).
Repository: repo
About Me: I am a pre-final undergraduate student at the National University of Singapore, and am super excited to be able to work with everyone at ns-3!

Phase 1: Code Cleanup + Implementation with 6LBR and 6LN

Code Refactoring
- Helper methods to parse and validate packets: Extract helper methods for parsing and validating ND packets to improve modularity and readability.
- General code cleanup: Restructure code in sixlowpan-nd-protocol.h/cc and remove unnecessary comments

Bug Fixes
- Disabling DAD: Disable DAD when necessary to comply with 6LoWPAN ND scenarios that bypass traditional IPv6 DAD
- Address Registration Fixes: Analyse address registration flow, identify and fix bugs to ensure working address bootstrapping between singular 6LN and 6LBR

Documentation
- Create detailed flowcharts to visualize key functions and message handling paths in the 6LoWPAN ND protocol logic

Phase 2: Implementation of EDAR/EDAC messages for multi-hop DAD

Additions:
- Add the all fields in the EARO used in Send-NS(EARO) and Receive-NA(EARO) message as defined in the following document

@@ Line 17: / Line 17: @@
 '''Phase 1: Code Cleanup + Implementation with 6LBR and 6LN'''
 * Code Refactoring
-Helper methods to parse and validate packets<br />
+** Helper methods to parse and validate packets: Extract helper methods for parsing and validating ND packets to improve modularity and readability. <br />
-General code cleanup<br />
+** General code cleanup: Restructure code in sixlowpan-nd-protocol.h/cc and remove unnecessary comments <br />
 * Bug Fixes
-Disabling DAD<br />
+** Disabling DAD: Disable DAD when necessary to comply with 6LoWPAN ND scenarios that bypass traditional IPv6 DAD <br />
-Address Registration Fixes<br />
+** Address Registration Fixes: Analyse address registration flow, identify and fix bugs to ensure working address bootstrapping between singular 6LN and 6LBR<br />
 * Documentation
+** Create detailed flowcharts to visualize key functions and message handling paths in the 6LoWPAN ND protocol logic
 '''Phase 2: Implementation of EDAR/EDAC messages for multi-hop DAD'''
 * Additions:
-Add the all fields in the EARO used in Send-NS(EARO) and Receive-NA(EARO) message as defined in [https://datatracker.ietf.org/doc/html/draft-ietf-6lo-updating-rfc-8928-02 the following document]
+** Add the all fields in the EARO used in Send-NS(EARO) and Receive-NA(EARO) message as defined in [https://datatracker.ietf.org/doc/html/draft-ietf-6lo-updating-rfc-8928-02 the following document]
 = Readings =