sdentry_v4
sizeof(struct sdentry_v4));
sizeof(struct sdentry_v4), compar_v4);
const struct in_addr *a = &((const struct sdentry_v4 *)ventry)->sda;
const struct in_addr *m = &((const struct sdentry_v4 *)ventry)->sdm;
sizeof(struct sdentry_v4), match_addr_v4) != NULL) {
sizeof(struct sdentry_v4), match_addr_v4) != NULL)
const struct sdentry_v4 *a = va;
const struct sdentry_v4 *b = vb;
struct sdentry_v4 *addrs;