Per-VLAN default gateway ( or, allowing access for hosts behind the LTM )

Did yo build a forward virtual for tcp and udp if needed? For the servers to open internet connections you need a Forward Virtual server listening on the server Vlan for any port/any address, to allow the servers requests to be sent out to the F5's default gateway. The F5 default gateway should be a router and the router should know how to get to the internet. The Internet response should take the same path back to the server using the network routing as long as the routers have a route to the server vlan by way of the self IP on the F5 where the F5s default gateway lives. so the response returns on the same vlan it egressed the F5.