DNSSEC: RDATA are not converted to canonical form before computing signature
Following SOA will result in bogus signature:
example.com. 3600 IN SOA alfa.example.com. Postmaster.example.com. 2014080509 900 900 86400 1800
```
Following SOA will result in bogus signature:
example.com. 3600 IN SOA alfa.example.com. Postmaster.example.com. 2014080509 900 900 86400 1800
```