http://tools.ietf.org/html/rfc5966
if rbldnsd does only UDP will not give problems for bind local cache, or isp remote dns servers in forwards ?
hope rbldns hosters dont sleep here 2 ways of workaround is: 1: use rbldnsd to dump zone to bind.zone (Gigaram usage) 2: let bind use forwards zones to rbldnsd master (Megaram usage) comments ? todo ipv6 in rbldnsd