get/set mtu

[JakkuSakura]

Description

Fixes #140

Type of change

• New feature

[codecov]

Codecov Report

❌ Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 67.99%. Comparing base (410696a) to head (961dfe9).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
core/src/dpdk/port.rs	0.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #141      +/-   ##
==========================================
- Coverage   68.38%   67.99%   -0.40%     
==========================================
  Files          66       66              
  Lines        5972     5983      +11     
==========================================
- Hits         4084     4068      -16     
- Misses       1888     1915      +27     

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