implements a straight forward dynamic dns service. sample cronjob: */5 * * * * daemon wget -o /dev/null http://shackspace.de/dyn?digest=... You may explicitely set an ip-address by appending &ip=1.2.3.4 to the query string. A proper record type is chosen depending on the given value: ip=1.2.3.4 - IN A 1.2.3.4 ip=2001::3 - IN AAAA 2001::3 ip=misc - IN TXT misc needs perl, bind9, nsupdate