IPv6 Support

[Night1]

IPv6 and AAAA Records are more and more common these days, I believe that TLDR should also add scans for record id 28.

class DNSTool:
def init( self, verbose = True ):
self.verbose = verbose
self.domain_cache = {}
self.RECORD_MAP = {
1: 'A',
2: 'NS',
5: 'CNAME',
6: 'SOA',
11: 'WKS',
12: 'PTR',
15: 'MX',
16: 'TXT',
17: 'RP',
18: 'AFSDB',
28: 'AAAA',
33: 'SRV',
38: 'A6'
}