I understand, just another awesome feature of Asus router's which I didn't know about.
Just so everyone understands, the router acts as a dns cache server and caches dns queries so if another devices on the lan went to
www.bbc.co.uk, when you want to go to it as well the router doesn't have to fire off a request over the internet to the dns server to look up the ip address because it already knows what the address is and thus the whole process is sped up. Sweeeeeeet