OFPIEH12_DEST
if ((*ext_hdrs & ~(OFPIEH12_HOP | OFPIEH12_DEST |
~(OFPIEH12_HOP | OFPIEH12_DEST | OFPIEH12_ROUTER |
*ext_hdrs |= OFPIEH12_DEST;
~(OFPIEH12_HOP | OFPIEH12_DEST |
OFPIEH12_DEST |
OFPIEH12_DEST |