#define ESRC(p) (p)
#define EDST(p) (p)
extern int vflag;
extern unsigned char *packetp;
extern unsigned char *snapend;
void bootp_print(struct bootp *bp, int length, u_short sport,
u_short dport);
char *ipaddr_string(struct in_addr *);
int printfn(u_char *s, u_char *ep);