ood-ports-lbsd/net/p5-Net-DNS-Resolver-Programmable/pkg/DESCR

Net::DNS::Resolver::Programmable is a Net::DNS::Resolver descendant
class that allows a virtual DNS to be emulated instead of querying
the real DNS. A set of static DNS records may be supplied, or
arbitrary code may be specified as a means for retrieving DNS
records, or even generating them on the fly.