I'm trying to span a VLAN to our branch site using L2TP. I have a 3850 stack at HQ and 3750 stack at BR site. I was able to get this working with routed interfaces in a lab environment, but is it possible to get this working with SVIs? Each stack has a routed port connected to our MPLS service and several VLANs (SVIs) configured. I've attached my topology.