I have a design question for my new inter-campus site. We recently build out a new site and made it a point to point connection back to my core network. My issues is rolling out my current Guest network to it. We currently have the Guest network (172.20.99.0/24) off the ASA router and we trunk it to all of our distribution switch (vlan 99). With my new site being layer 3 how do I offer guest network to that site? Do I create a GRE tunnel? Any thoughts?