bootp_packet
struct bootp_packet call;
struct bootp_packet reply;
*vendp++ = (sizeof(struct bootp_packet) >> 8) & 255;
*vendp++ = sizeof(struct bootp_packet) & 255;
bootpc_hascookie(struct bootp_packet *bp)
bootpc_tag(struct bootpc_tagcontext *tctx, struct bootp_packet *bp,
struct bootp_packet reply;
struct bootp_packet *bp, int len, int tag);