Comment 4 for bug 1057844

Reviewed: https://review.openstack.org/15758
Committed: http://github.com/openstack/quantum/commit/86436a661b4cdb2aedc3c55ce37ba38c03f37e3f
Submitter: Jenkins
Branch: master

commit 86436a661b4cdb2aedc3c55ce37ba38c03f37e3f
Author: Dan Wendlandt <email address hidden>
Date: Tue Nov 20 14:09:19 2012 -0800

    bug 1057844: improve floating-ip association checks

    allow multiple floating ips to be associated with the same internal port
    as long as they map to different external nets (not yet supported in
    Folsom) or different internal fixed IPs. With Quantum, there is no
    need to disallow either scenario.

    Also improve check for a valid external network to router to internal
    subnet path when a floating IP is bound.

    Change-Id: Iced675e1f064172ee8a5bb6b9e37032e83af5711