[ResearchAtPlay]

The purpose of this tool is testing if a domain name system follows (or does not follow) the correct specifications:

IBDNS fills a gap in the universe of DNS test tools by offering the possibility of deviating intentionally and on demand from the DNS specifications, and thus simulating incorrect behaviour of authoritative name servers.

[ivan888]

To be pedantic, its purpose is for verification testing of systems that allow for testing of the type you describe