ntpdata
#define LEN_PKT_NOMAC (sizeof (struct ntpdata) - AUTH_OCTETS_V3)
struct ntpdata;
extern int interpret_ntp(int, struct ntpdata *, int);
interpret_ntp(int flags, struct ntpdata *ntp_pkt, int fraglen)
struct ntpdata ntp_msg;
struct ntpdata *ntp = &fragbuf.ntp_msg;
(void) interpret_ntp(flags, (struct ntpdata *)data,