static const size_t icmp6_size = sizeof(struct icmp6_hdr);
static const size_t ns_size = sizeof(struct nd_neighbor_solicit);
static const size_t opt_size = sizeof(struct nd_opt_hdr);
+
+#ifndef MAX
#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
/* RFC 1071 */