Multiple inbound gateways connecting to all vlans.

and to summarize, currently vlan a is the active external vlan, a default route is in place with destination and netmask of 0.0.0.0 using vlan a's gateway,

all internal vlans are routed through the f5's and all servers are using the f5's self ip's as their gateway address.

snats are in place to force any outbound traffic from internal servers through the correct vip.

when adding vlan b to the mix I cannot get traffic to route in and out of addresses with the vlan b address space.

if i remove the default route and rely on auto last hop all traffic flow seems broken.

I cannot segregate the internal vlan's using a route domain as we have a mish mash of them and may need to route out of either of the external address spaces depending on use case.