Revert fix private ip address

[jonathan-eq]

Issue
Resolves #my_issue

Approach
Short description of the approach

(Screenshot of new behavior in GUI if applicable)

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'just rapid-tests')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Add backport label to latest release (format: 'backport release-branch-name')

[codecov-commenter]

Codecov Report

❌ Patch coverage is 81.25000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.54%. Comparing base (4b7dc2c) to head (8ee996e).

Files with missing lines	Patch %	Lines
src/ert/shared/net_utils.py	78.57%	3 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           version-19.0   #12778      +/-   ##
================================================
- Coverage         90.55%   90.54%   -0.02%     
================================================
  Files               437      437              
  Lines             30112    30088      -24     
================================================
- Hits              27267    27242      -25     
- Misses             2845     2846       +1     

Flag	Coverage Δ
cli-tests	37.15% <68.75%> (-0.05%)	⬇️
gui-tests	68.60% <12.50%> (-0.01%)	⬇️
performance-and-unit-tests	76.82% <81.25%> (-0.02%)	⬇️
test	37.95% <12.50%> (-0.01%)	⬇️

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[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing jonathan-eq:fix-private-ip-address (8ee996e) with version-19.0 (4b7dc2c)}

Summary

✅ 23 untouched benchmarks