Format of NDIS request block for GetProtocolManagerLinkage:
Offset Size Description )
00h WORD 04h
02h WORD returned status (see #01434)
04h DWORD returned dispatch point
08h DWORD unused
0Ch WORD returned protocol manager DS
Note: the dispatch point may be called as follows instead of using this IOCTL
STACK: WORD protocol manager DS
DWORD pointer to request block
Return: AX = returned status
STACK popped
SeeAlso: #01424,#01425,#01426,#01428,#01429,#01430,#01431,#01432,#01433