- items parts lengths must be multiples of 2 for HEX, 4 for base64 and 8 for
base32hex blocks (but DHCID example from RFC is more general!)
- NSEC3 hash is with padding (but RFC 5155 section 3.3 says "unpadded")
-- date version of timestamp in RRSIG is limited to the end of the year 2105
- (for better checking of 32bit integer)
+- timestamps in RRSIG are limited to the end of year 2225
- zscanner doesn't make semantic control of parser rdata
- the following zone is considered ok with two records
"""