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["yanheven@xxxxxxxxx" <yanheven@xxxxxxxxx>]

Public bug reported:

my env:
# rpm -qa | grep neutron
openstack-neutron-openvswitch-2014.1.3-1.el6.noarch
openstack-neutron-ml2-2014.1.3-1.el6.noarch
python-neutronclient-2.3.4-4.el6.noarch
openstack-neutron-2014.1.3-1.el6.noarch
python-neutron-2014.1.3-1.el6.noarch

use ML2,tenant network:vxlan

when I boot an instance with 3 netwok interfaces,it's three ip ,such as
10.0.0.5,10.0.1.5,10.0.2.5

internal-network-subnet1:10.0.0.0/24  gateway:10.0.0.1   connect to a router,which connect a external network.
internal-network-subnet2:10.0.1.0/24  gateway:10.0.1.1
internal-network-subnet3:10.0.2.0/24  gateway:10.0.2.1

ideally, the gateway of my instance shoul be 10.0.0.1,which has access
to the external network,so the instance can have access to the
Internet.but in fact ,the gateway of instance is not always be 10.0.0.1,
causing the instance fail to access the Internet.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1392210

Title:
  instance change it's gateway when has more than 1 network interface

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  my env:
  # rpm -qa | grep neutron
  openstack-neutron-openvswitch-2014.1.3-1.el6.noarch
  openstack-neutron-ml2-2014.1.3-1.el6.noarch
  python-neutronclient-2.3.4-4.el6.noarch
  openstack-neutron-2014.1.3-1.el6.noarch
  python-neutron-2014.1.3-1.el6.noarch

  use ML2,tenant network:vxlan

  when I boot an instance with 3 netwok interfaces,it's three ip ,such
  as 10.0.0.5,10.0.1.5,10.0.2.5

  internal-network-subnet1:10.0.0.0/24  gateway:10.0.0.1   connect to a router,which connect a external network.
  internal-network-subnet2:10.0.1.0/24  gateway:10.0.1.1
  internal-network-subnet3:10.0.2.0/24  gateway:10.0.2.1

  ideally, the gateway of my instance shoul be 10.0.0.1,which has access
  to the external network,so the instance can have access to the
  Internet.but in fact ,the gateway of instance is not always be
  10.0.0.1, causing the instance fail to access the Internet.

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