LLT-6371 Introduce ipv6_enable flag

[matislovas]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.77%. Comparing base (b888a57) to head (ee32763).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
neptun/src/device/mod.rs	0.00%	40 Missing ⚠️
neptun/src/device/api.rs	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
- Coverage   46.03%   45.77%   -0.27%     
==========================================
  Files          15       15              
  Lines        4373     4398      +25     
==========================================
  Hits         2013     2013              
- Misses       2360     2385      +25     

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