When this object is set to a non-zero value, the filter that it is associated with performs the following operations on every packet:

1) - If the packet doesn't match the protocol directory entry identified by this object, discard the packet and exit (i.e., discard the packet if it is not of the identified protocol). 2) - If the associated filterProtocolDirLocalIndex is non-zero and the packet doesn't match the protocol directory entry identified by that object, discard the packet and exit 3) - If the packet matches, perform the regular filter algorithm as if the beginning of this named protocol is the beginning of the packet, potentially applying the filterOffset value to move further into the packet.