Fix tests for macOS arp fix

[raymanP]

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Summary of changes:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3bc6af1) 82.57% compared to head (d381187) 87.77%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #96      +/-   ##
==========================================
+ Coverage   82.57%   87.77%   +5.19%     
==========================================
  Files           3        3              
  Lines         924      924              
==========================================
+ Hits          763      811      +48     
+ Misses        161      113      -48     

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[raymanP]

Python 2.7 test setting seems not to be functional anymore
Could be good to remove it's support here as done in 1.0.0-wip?