[enterprise-4.13] OCPBUGS-49859: Added br-ex note to the networking route doc

[dfitzmau]

Cherry pick of #88066 with commit acd895a

Version(s):
4.13

Issue:
OCPBUGS-49859

Link to docs preview:

[openshift-ci-robot]

@dfitzmau: This pull request references Jira Issue OCPBUGS-49859, which is invalid:

• expected the bug to be in one of the following states: NEW, ASSIGNED, POST, but it is Release Pending (Done) instead
• expected Jira Issue OCPBUGS-49859 to depend on a bug in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

In response to this:

Version(s):

Issue:

Link to docs preview:

QE review:

• QE has approved this change.

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[ocpdocs-previewbot]

🤖 Mon Feb 10 12:23:56 - Prow CI generated the docs preview:

https://88276--ocpdocs-pr.netlify.app/openshift-enterprise/latest/networking/k8s_nmstate/k8s-nmstate-updating-node-network-config.html

[openshift-ci]

@dfitzmau: all tests passed!

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[openshift-ci-robot]

@dfitzmau: Jira Issue OCPBUGS-49859 is in an unrecognized state (Release Pending) and will not be moved to the MODIFIED state.

In response to this:

Cherry pick of #88066 with commit acd895a

Version(s):
4.13

Issue:
OCPBUGS-49859

Link to docs preview:

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.