fix nf_tables detection

[l1b0k]

No description provided.

[codecov-commenter]

Codecov Report

Merging #326 (214b781) into main (9034584) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##            main    #326   +/-   ##
=====================================
  Coverage   4.45%   4.45%           
=====================================
  Files        120     120           
  Lines      10736   10736           
=====================================
  Hits         478     478           
  Misses     10223   10223           
  Partials      35      35           

Flag	Coverage Δ
unittests	4.45% <ø> (ø)

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