Problem Description: Clearly explain the issue.

SB DB with static MAC binding will cause "referential integrity violation" in northd during upgrade to 25.09.

 Impact Assessment: Describe the severity and impact (e.g., network down,availability of a workaround, etc.).

Workaround would be to delete all static MAC bindings before upgrade.

 Software Versions: Specify the exact versions in use (e.g.,openvswitch3.1-3.1.0-147.el8fdp).

ovn25.09-25.09.0-beta.7.el9fdp

  Issue Type: Indicate whether this is a new issue or a regression (if a regression, state the last known working version).

Regression

 Reproducibility: Confirm if the issue can be reproduced consistently. If not, describe how often it occurs.

100%