The category "dns" has been added, now is the time to move the
dns-related ports to the new world. Is there anyone who is brave
enough to complete this difficult job? ;)

Here is the list of the ports that seems to fit in the new category:

devel/libdjbdns
devel/p5-POE-Component-Client-DNS
net/adns
net/bind8
net/bind84
net/bind9
net/bind9-dlz
net/ddclient
net/ddup
net/dhid
net/dhisd
net/djbdns
net/dlint
net/dnrd
net/dns_balance
net/dnsmasq
net/dnssecwalker
net/dnstop
net/dnstracer
net/dnsutl
net/dnswalk
net/domtools
net/ez-ipupdate
net/firedns
net/ghtool
net/h2n
net/hesiod
net/host
net/idnkit
net/ipcheck
net/maradns
net/mdnsd
net/mydns
net/noip
net/nsd
net/nslint
net/nsping
net/odsclient
net/p5-BIND-Conf_Parser
net/p5-DNS-Config
net/p5-DNS-Zone
net/p5-Net-DNS
net/p5-Net-DNS-SEC
net/p5-Net-DNS-ZoneFile
net/p5-Tie-DNS
net/pdnsd
net/posadis
net/powerdns
net/py-adns
net/py-dns
net/sleuth
net/staticcharge
net/totd
net/walker