MAX_IPOPTLEN
char rspace[MAX_IPOPTLEN]; /* record route space */
icmp_len += MAX_IPOPTLEN;
#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN)
static char old_rr[MAX_IPOPTLEN];
struct in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)];
if (m->m_len > MAX_IPOPTLEN + sizeof(struct in_addr))
char ipopt_list[MAX_IPOPTLEN]; /* options proper */
#define MAX_LSRR ((MAX_IPOPTLEN - 4) / 4)