ppp_header
struct ppp_header h;
struct ppp_header *h;
h = mtod(m, struct ppp_header *);
#define PPP_HEADER_LEN sizeof (struct ppp_header)
struct ppp_header *h;
h = mtod(m, struct ppp_header *);
struct ppp_header *h = NULL;
h = mtod(m, struct ppp_header *);
struct ppp_header *h = NULL;
h = mtod(m, struct ppp_header *);