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Unable to access external network

I have performed a packstack install (latest version) and run an all-in-one deployment which completed successfully. Upon completion I have created an internal and external within the horizon dashboard. I can assign IPs on both networks but I can only access them from the packstack server using ip netns, for example ip netns exec qrouter-2a65e98f-9bd3-4573-9330-3aee921b98bf ssh -i ~/.ssh/id_rsa centos@ However, I am not able to simply ssh in using the external IP address. I set the gateway on the router to use the external network but I have since noticed that the status of this is down and it states VIF type binding failed. Unfortunately everything i seem to try results in the same down status.

The installation was a standard allinone install attempting to use my network packstack --allinone --provision-demo=n --os-neutron-ovs-bridge-mappings=extnet:br-ex --os-neutron-ovs-bridge-interfaces=br-ex:enp2s0f0 --os-neutron-ml2-type-drivers=vxlan,flat.

I have looked online at a number of resources but I have not been able to identify the cause. I am fairly new to Openstack so any help would be much appreciated? Please let me know if any additional information is needed.