VPNUK.net SmartDNS Updater Script
I've been using VPNUK.net for a while now to access UK based services such as iPlayer, however, it's SmartDNS service doesn't have a client which will run automatically and my service provider gives me a dynamic IP.
I decided to write a small PHP client to access the client control panel when my ip changed, registering the new one.
It's on GitHub, grab a copy here; https://github.com/Siftah/vpnuk_smartdns_client
If you use DNSMasq then an entry such as the following in /etc/dnsmasq.conf may also help to ensure you're pointing all relevant DNS queries at the right DNS server;