Fail adapter migration if the IEEE cannot be written

[puddly]

Logging a warning but still not writing the IEEE address isn't a good default, since the resulting network superficially functions but then slowly degrades as network management commands using the wrong IEEE will not work.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.43%. Comparing base (1f61e0b) to head (da852de).
Report is 2 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #672      +/-   ##
==========================================
+ Coverage   99.21%   99.43%   +0.21%     
==========================================
  Files          51       51              
  Lines        3691     3693       +2     
==========================================
+ Hits         3662     3672      +10     
+ Misses         29       21       -8     

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