"Network 1" VM and "Network 2" VM connenting to the same external network, cannot communicate to each other.

ODL Version : Stable/boron

Openstack Version : mitaka

Setup Details : 3 ODL Nodes + 1 Control Node + 2 Compute Nodes

Issue scenario:

1.Create external network.
2.Create network1, router1, VM A on network1.
and attach FloatingIP to VM A
3.Create network2, router2, VM Bon network2.
and attach FloatingIP to VM B
4.ping from VM A FloatingIP to the VM B FloatingIP is failure.

Steps to reproduce:

1.Create external network:
neutron net-create provider-vlan100 --provider:network_type vlan --router:external true --provider:physical_network physnet1 --provider:segmentation_id 100

neutron subnet-create --name subnet-provider-100 provider-vlan100 192.169.6.0/24 --enable_dhcp=False --allocation_pool start=192.169.6.25,end=192.169.6.45 --gateway 192.169.6.17

Create router1:
neutron router-create router1

Attaching router1 to the external network:
neutron router-gateway-set router1 provider-vlan100
neutron floatingip-create provider-vlan100

Create router2:
neutron router-create router2

Attaching router2 to the external network:
neutron router-gateway-set router2 provider-vlan100

Create Internal two network

Attach Network1 in router1 and Network2 in router2.

Create VM A with Net1 and VM B with Net2, associate floating for both the VM.

ping from VM A FloatingIP to the VM B FloatingIP is failure.