F5 Big-IP 6400 LTM 9.3.1- Asymetric routing across multiple VLANs

Yesterday, a coworker discovered an issue where packets routed outbound on one VLAN were not being processed when returning on a different VLAN.

here's the fix:

# disable Connection.VlanKeyed
[root@bigip:Active] config # bigpipe db Connection.VlanKeyed disable

# disable the Packet Velocity ASIC (PVA)
[root@bigip:Active] config # bigpipe db Pva.Acceleration none