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feat: Disable PMTUD if using DA - #4126

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simon-lemay-unity wants to merge 2 commits into
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misc/follow-pmtud-utp-default
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feat: Disable PMTUD if using DA#4126
simon-lemay-unity wants to merge 2 commits into
develop-2.0.0from
misc/follow-pmtud-utp-default

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@simon-lemay-unity

@simon-lemay-unity simon-lemay-unity commented Aug 18, 2026

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Purpose of this PR

At some point UTP will start enabling path MTU discovery (PMTUD) by default. When that happens, we don't want it enabled in NGO if using distributed authority since the CMB server doesn't support that part of the UTP protocol.

Jira ticket

N/A

Changelog

None

Documentation

No documentation changes or additions were necessary.

Testing & QA

Functional Testing

Manual testing :

  • Manual testing done

Automated tests:

  • Covered by existing automated tests
  • Covered by new automated tests

Does the change require QA team to:

  • Review automated tests?
  • Execute manual tests?
  • Provide feedback about the PR?

Up-port

3.X: PR #4127

Backports

N/A

@codecov-github-com

codecov-github-com Bot commented Aug 18, 2026

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Codecov Report

All modified and coverable lines are covered by tests ✅

@@              Coverage Diff               @@
##           develop-2.0.0    #4126   +/-   ##
==============================================
  Coverage          73.94%   73.95%           
==============================================
  Files                172      172           
  Lines              28099    28105    +6     
==============================================
+ Hits               20779    20785    +6     
  Misses              7320     7320           
Flag Coverage Δ
NGOv2_project_testproject_ubuntu_pinnedTrunk 73.61% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines Coverage Δ
...meobjects/Runtime/Transports/UTP/UnityTransport.cs 76.93% <100.00%> (+0.17%) ⬆️
Components Coverage Δ
com.unity.netcode.gameobjects 73.95% <100.00%> (+<0.01%) ⬆️

ℹ️ Need help interpreting these results?

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