NSEC3 is not backwards compatible with key algorithms that existed
before the RFC 5155 specification was published.
(cherry picked from commit 00c5dabea3)
Check 'nsec3param' configuration for the number of iterations. The
maximum number of iterations that are allowed are based on the key
size (see https://tools.ietf.org/html/rfc5155#section-10.3).
Check 'nsec3param' configuration for correct salt. If the string is
not "-" or hex-based, this is a bad salt.
(cherry picked from commit 7039c5f805)