Fixes kernel crash parsing malformed packets (12 nested QinQ VLAN headers with GRE)
Fixes kernel crash parsing malformed packets (12 nested QinQ VLAN headers with GRE)

ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING,ntop/PF_RING