Comment 3 for bug 1292102

Reviewed: https://review.openstack.org/85592
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=af89d74d2961db6a04572375150ad908c9e72e78
Submitter: Jenkins
Branch: master

commit af89d74d2961db6a04572375150ad908c9e72e78
Author: Kevin Benton <email address hidden>
Date: Sun Apr 6 04:57:36 2014 -0700

    Verify ML2 type driver exists before calling del

    Verifies that an ML2 type driver exists for a given
    segment type before attempting to call the release_segment
    method on it. Logs an error if a type driver is not
    found.

    This covers the case where a segment is created with
    a given type and then ML2 is reconfigured without
    support for that type.

    DocImpact
    The ML2 documentation should be updated with a warning
    that disabling a network type driver and re-enabling
    it later may lead to possible DB inconsistencies.

    Closes-Bug: #1292102
    Change-Id: I65a35abf3ed57347bb6e8fee228f8c0697217c00