Comment 5 for bug 1236783

Reviewed: https://review.openstack.org/77118
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6d1678e86385d49615d77593b8ee5d1f17243357
Submitter: Jenkins
Branch: stable/havana

commit 6d1678e86385d49615d77593b8ee5d1f17243357
Author: Darragh O'Reilly <email address hidden>
Date: Tue Oct 8 10:36:05 2013 +0000

    Simplify using external routers and metadata

    The dhcp agent only pushes out the metadata
    static route when the subnet is isolated, and it
    determines that by checking if the gateway_ip is
    not set. This makes it tricky to use external
    routers and metadata from dhcp at the same time.

    This patch changes how the dhcp agent determines
    that the subnet is isolated. It now considers it
    isolated if there is no Neutron router on it.
    This makes it straightforward to use an external
    router on a provider network and get the
    metadata from the dhcp namespace.

    Change-Id: I0e29a2f058564c267176dab26da00f6ef579808b
    Closes-Bug: 1236783
    (cherry picked from c73b54e50b62c489f04432bdbc5bee678b18226e)