az_nsec3_find_cover
node = az_nsec3_find_cover(z, nx, nxlen, algo, iter, salt,
node = az_nsec3_find_cover(z, wc, wclen, algo, iter, salt,
node = az_nsec3_find_cover(z, nx, nxlen, algo, iter, salt,
node = az_nsec3_find_cover(z, wc, wclen, algo, iter, salt,