arc_header
struct arc_header *ah;
ah = mtod(head, struct arc_header *);
const struct arc_header *cah;
struct arc_header *ah;
cah = (const struct arc_header *)dst->sa_data;
ah = mtod(m, struct arc_header *);
ah = mtod(m, struct arc_header *);
ah = mtod(m, struct arc_header *);
ah = mtod(m, struct arc_header *);
struct arc_header *ah, *ah1;
ah = mtod(m, struct arc_header *);
ah = mtod(m, struct arc_header *);
ah1 = mtod(m1, struct arc_header *);
struct arc_header *ah;
ah = mtod(m, struct arc_header *);