Bucknell University P. Gross Because of the urgent need for, and substantial difficulty in, renumbering IP networks, the PIER working group is compiling a series of documents to assist sites in their renumbering efforts. The intent of these documents is to provide both educational and practical information to the Internet community. The intent of these document is to provide both educational and practical information to the Internet community. To this end the PIER WG is soliciting information from vendors and other members of the Internet community about issues and problems hat organizations should consider when undertaking their renumbering process.