I made a mistake in the pull req and didn't catch it (OOPS!).
`dns.reversename.from_address(address)` is what was in the code. Unfortunately, that causes a nice, fat `NameError: name 'address' is not defined` error. This fixes that.
rdtype and rdclass are also supported by this function.
"""
- return self.query(dns.reversename.from_address(address),
+ return self.query(dns.reversename.from_address(ipaddr),
rdtype=dns.rdatatype.PTR,
rdclass=dns.rdataclass.IN,
*args, **kwargs)