typedef union {	char *string;	u_short us;	u_long ul;} YYSTYPE;#define	START	257#define	END	258#define	SEND	259#define	RECV	260#define	ICMP	261#define	UDP	262#define	TCP	263#define	SPORT	264#define	DPORT	265#define	SEQ	266#define	ID	267#define	TYPE	268#define	CODE	269#define	DATA	270#define	ACK	271#define	WIN	272#define	NMATCH	273#define	QSTRING	274extern YYSTYPE yylval;