"starting userspace STP failed, starting kernel STP" error seen during RHEL 6 boot

Solution Verified - Updated -

Issue

  • An error message similar to

    Sep 14 10:03:56 testbox kernel: virbr0: starting userspace STP failed, starting kernel STP

     may appear on-screen and in /var/log/messages on startup of RHEL 6.

Environment

  • Red Hat Enterprise Linux 6

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