/* *  this file used by (at least) snoopy, tboot and bootp */enum{	Bootrequest = 1,	Bootreply   = 2,}; typedef struct Bootp Bootp;struct Bootp{	uchar	op;		/* opcode */	uchar	htype;		/* hardware type */	uchar	hlen;		/* hardware address len */	uchar	hops;		/* hops */	uchar	xid[4];		/* a random number */	uchar	secs[2];	/* elapsed snce client started booting */	uchar	flag[2];	uchar	ciaddr[4];	/* client IP address (client tells server) */	uchar	yiaddr[4];	/* client IP address (server tells client) */	uchar	siaddr[4];	/* server IP address */	uchar	giaddr[4];	/* gateway IP address */	uchar	chaddr[16];	/* client hardware address */	char	sname[64];	/* server host name (optional) */	char	file[128];	/* boot file name */	char	vend[128];	/* vendor-specific goo */};