c00fa8dfd9
optimization made last year. should solve PR 17867 and 10195. IP_HDRINCL behavior of raw ip socket is kept unchanged. we may want to provide IP_HDRINCL variant that does not swap endian.
In case you were wondering why this code is still present: The ISO (or OSI) stack is still in use by many router vendors (e.g., using IS-IS the OSI equivalent of OSPF, to carry IP routes). Chris. chopps@netbsd.org