#define PACKET_VERSION 1
#define DNSNAME_MAX 20

struct packet {
	u_int8_t	ver;
	u_int8_t	type;
/* XXX nicer way for _SIZE ... ? */
#define PACKET_NEWCONN 0
#define PACKET_NEWCONN_SIZE (2 + sizeof((struct packet *)0)->pdat.newconn)
#define PACKET_DELCONN 1
#define PACKET_DELCONN_SIZE (2 + sizeof((struct packet *)0)->pdat.delconn)
#define PACKET_DATA 2
#define PACKET_DATA_SIZE (2 + sizeof((struct packet *)0)->pdat.data)
#define PACKET_NAME 3
#define PACKET_NAME_SIZE ((2 + sizeof((struct packet *)0)->pdat.name) - DNSNAME_MAX)

	union {
		struct newconn {
			u_int16_t	id;
			u_int32_t	src;
			u_int32_t	dst;
			u_int8_t	proto;
			u_int8_t	size;
		} newconn;
		struct delconn {
			u_int16_t	id;
		} delconn;
		struct data {
			u_int16_t	connid;
			u_int8_t	size;
		} data;
		struct name {
			u_int32_t	addr;
			u_int8_t	len;
			u_char		fqdn[DNSNAME_MAX];
		} name;
	} pdat;
#define newconn_id	pdat.newconn.id
#define newconn_src	pdat.newconn.src
#define newconn_dst	pdat.newconn.dst
#define newconn_proto	pdat.newconn.proto
#define newconn_size	pdat.newconn.size
#define delconn_id	pdat.delconn.id
#define data_connid	pdat.data.connid
#define data_size	pdat.data.size
#define name_addr	pdat.name.addr
#define name_len	pdat.name.len
#define name_fqdn	pdat.name.fqdn
};