in_pktinfo_t
in_pktinfo_t *pktinfo;
sizeof (struct T_opthdr) + sizeof (in_pktinfo_t));
opthdr->len = sizeof (struct T_opthdr) + sizeof (in_pktinfo_t);
pktinfo = (in_pktinfo_t *)(opthdr + 1);
(void) memset(pktinfo, 0, sizeof (in_pktinfo_t));
in_pktinfo_t *pktinfo;
sizeof (in_pktinfo_t);
pktinfo = (in_pktinfo_t *)(opthdr + 1);
(void) memset(pktinfo, 0, sizeof (in_pktinfo_t));