explain need for grpduzmq

[anarkiwi]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 20.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 75.63%. Comparing base (8e9f67d) to head (327d8a7).
Report is 1 commits behind head on main.

Files	Patch %	Lines
gamutrf/grpduzmq.py	20.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1319      +/-   ##
==========================================
- Coverage   75.69%   75.63%   -0.06%     
==========================================
  Files          43       43              
  Lines        3904     3908       +4     
==========================================
+ Hits         2955     2956       +1     
- Misses        949      952       +3     

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