56         struct cmsghdr* cmptr;  in send_from()  local
59         cmptr = CMSG_FIRSTHDR(&msg);  in send_from()
63             struct in_pktinfo* pkt = (struct in_pktinfo*) CMSG_DATA(cmptr);  in send_from()
66             msg.msg_controllen = cmptr->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));  in send_from()
67             cmptr->cmsg_level = SOL_IP;  in send_from()
68             cmptr->cmsg_type = IP_PKTINFO;  in send_from()
70             struct in_addr* a = (struct in_addr*) CMSG_DATA(cmptr);  in send_from()
72             msg.msg_controllen = cmptr->cmsg_len = CMSG_LEN(sizeof(struct in_addr));  in send_from()
73             cmptr->cmsg_level = IPPROTO_IP;  in send_from()
74             cmptr->cmsg_type = IP_SENDSRCADDR;  in send_from()
79             struct in6_pktinfo* pkt = (struct in6_pktinfo*) CMSG_DATA(cmptr);  in send_from()
82             msg.msg_controllen = cmptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));  in send_from()
83             cmptr->cmsg_type = IPV6_PKTINFO;  in send_from()
84             cmptr->cmsg_level = IPV6_LEVEL;  in send_from()
508     struct cmsghdr* cmptr;  in receive_query()  local
559             for (cmptr = CMSG_FIRSTHDR(&msg); cmptr; cmptr = CMSG_NXTHDR(&msg, cmptr))  in receive_query()
560                 if (cmptr->cmsg_level == SOL_IP && cmptr->cmsg_type == IP_PKTINFO) {  in receive_query()
562                         ((struct in_pktinfo*) CMSG_DATA(cmptr))->ipi_spec_dst;  in receive_query()
563                     if_index = ((struct in_pktinfo*) CMSG_DATA(cmptr))->ipi_ifindex;  in receive_query()
567             for (cmptr = CMSG_FIRSTHDR(&msg); cmptr; cmptr = CMSG_NXTHDR(&msg, cmptr))  in receive_query()
568                 if (cmptr->cmsg_level == IPPROTO_IP && cmptr->cmsg_type == IP_RECVDSTADDR)  in receive_query()
569                     dst_addr_4 = dst_addr.addr.addr4 = *((struct in_addr*) CMSG_DATA(cmptr));  in receive_query()
570                 else if (cmptr->cmsg_level == IPPROTO_IP && cmptr->cmsg_type == IP_RECVIF)  in receive_query()
571                     if_index = ((struct sockaddr_dl*) CMSG_DATA(cmptr))->sdl_index;  in receive_query()
577             for (cmptr = CMSG_FIRSTHDR(&msg); cmptr; cmptr = CMSG_NXTHDR(&msg, cmptr))  in receive_query()
578                 if (cmptr->cmsg_level == IPV6_LEVEL && cmptr->cmsg_type == IPV6_PKTINFO) {  in receive_query()
579                     dst_addr.addr.addr6 = ((struct in6_pktinfo*) CMSG_DATA(cmptr))->ipi6_addr;  in receive_query()
580                     if_index = ((struct in6_pktinfo*) CMSG_DATA(cmptr))->ipi6_ifindex;  in receive_query()