Work in progress for DTLS fixing

[gdamore]

fixes #

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[codecov]

Codecov Report

❌ Patch coverage is 86.99187% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.29%. Comparing base (8396f1d) to head (c9e4b41).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
src/sp/transport/dtls/dtls.c	63.63%	8 Missing ⚠️
src/supplemental/tls/tls_common.c	91.75%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2196      +/-   ##
==========================================
+ Coverage   83.10%   83.29%   +0.19%     
==========================================
  Files          97       97              
  Lines       22292    22375      +83     
  Branches     3214     3229      +15     
==========================================
+ Hits        18525    18637     +112     
+ Misses       3691     3655      -36     
- Partials       76       83       +7     

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