Add possibility to specify wildcard domain entries

Description

I need to specify a wildcard domain, so e.g. all subdomains of example.bdaca.pl will be resolved for the same IP address. E.g.:

nslookup example.bdaca.pl

Name:	example.bdaca.pl
Address: 10.80.0.15


nslookup huehue.example.bdaca.pl

Name:	huehue.example.bdaca.pl
Address: 10.80.0.15