networking-vpp 19.03

To complement the GPE overlay, there is now also a L3 solution for port mirroring (OpenStack TaaS) connections. When you're using GPE, the overlay is L3 and you may have routers between your compute nodes, so moving the TAP traffic around also requires an L3 overlay. We use VXLAN point to point connections to get that copy of traffic to the VM destination, and these can be routed over L3.

We automatically use VXLAN connections when you're tapping ports on GPE networks and VLAN connections for L2 networks so this should all Just Work.

We've worked on out Python 3 compatibility in preparation for the EOL of Pythnon 2. Both the Neutron server's driver components and the agent components that control VPP should now support Python 3, but this work is ongoing and if you do find any issues please report them on the Luanchpad page.

We've worked on our L3 Neutron routers support and added functionality that allows you to use NAT from multiple routers simultaneously -ideal if, for instance, you like to use one router per tenant and in more unusual cases routers with different external networks.

We've been doing the usual round of bug fixes and updates - the code will work with both VPP 18.10 and 19.01 and has been updated to keep up with Neutron Rocky and Stein.