MFC 1.7, 1.8:
MFC 1.7, 1.8:

  Return value PKT_ALIAS_FOUND_HEADER_FRAGMENT isn't an error case. The
  packet shouldn't be dropped.

  Submitted by:		Alexander Motin <mav alkar.net>

  Correctly calculate length of IP header.

  Submitted by:		Eugene Hartmann <eugene tpsb.com.ru>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase