This is data associated with a network interface / NIC / wossname which the filter driver has been or may be attached to. When possible it is attached dynamically, but this may not be possible on all OSes so we have to be flexible about things.
A network interface / NIC / wossname can only have one filter driver instance attached to it. So, attempts at connecting an internal network to an interface that's already in use (connected to another internal network) will result in a VERR_SHARING_VIOLATION.
Only one internal network can connect to a filter driver instance.
|struct VBOXNETFLTINS *||pNext|
|uint8_t abPadding |