Abstract
This paper proposes a distributed architecture of web filtering system focused on its operation and implementation for IPv6 home networks. The realized system, called WKeeper, employs the feature of IPv6 anycast to achieve distributed load balance. WKeeper has been proven to be functioning well in both IPv4 and IPv6 networks even with mobility support. In a home network environment, WKeeper efficiently and precisely maintains the URL-block-list database with enormous amount of entries, as well as its operation is robust and with low cost. Besides, experimental result shows that the delay of query response is bounded significantly even if heavy load.