\begin{thebibliography}{1}

\bibitem{draft-ietf-dhc-dhcpv6}
J.~Bound, R.~Droms, C.~Perkins, B.~Volz, T.~Lemon, and M.~Carney, ``Dynamic
  host configuration protocol for {IP}v6 ({DHCP}v6),'' {Internet Draft},
  Internet Engineering Task Force, June 2002.
\newblock Work in progress.

\bibitem{rfc3261}
J.~Rosenberg, H.~Schulzrinne, G.~Camarillo, A.~Johnston, J.~Peterson,
  R.~Sparks, M.~Handley, and E.~Schooler, ``{SIP:} session initiation
  protocol,'' RFC 3261, Internet Engineering Task Force, June 2002.

\bibitem{rfc3263}
J.~Rosenberg and H.~Schulzrinne, ``Session initiation protocol {(SIP):}
  locating {SIP} servers,'' RFC 3263, Internet Engineering Task Force, June
  2002.

\bibitem{rfc2119}
S.~Bradner, ``Key words for use in {RFCs} to indicate requirement levels,'' RFC
  2119, Internet Engineering Task Force, Mar. 1997.

\bibitem{rfc1035}
P.~V. Mockapetris, ``Domain names - implementation and specification,'' RFC
  1035, Internet Engineering Task Force, Nov. 1987.

\end{thebibliography}
