Let me hear you say: IPv6!

2.1  Preparation Phase - Present to December 2008

 In the Preparation Phase, entities prepare to provide
 Internet-facing services via IPv6-based connectivity
 while continuing to provide Internet-facing services
 via IPv4 connectivity.

 During the Preparation Phase, the following principles apply:

 2.1.1 Service Providers SHOULD offer IPv6-based Internet Service
      to their Internet customers.  IPv6-based Internet Service
      MAY be provided via IPv6 transition mechanisms or native
      IPv6 network service.
 2.1.2 Organizations SHOULD arrange for IPv6-based Interent
      connectivity for any Internet-facing servers (e.g. web,
      email, and domain name servers).  Internet-facing IPv6
      servers MAY be treated as production by the organization,
      but MUST NOT be treated as production by other Internet
      organizations.
 2.1.3 Organizations MAY provide IPv6-based Internet connectivity
      to internal user communities.

2.2  Transition Phase - January 2009 to December 2010

 In the Transition Phase, entities provide Internet-facing services
 via IPv6-based connectivity in addition to IPv4-based connectivity.

 During the Transition Phase, the following principles apply:

 2.2.1 Service Providers MUST offer IPv6-based Internet Service to
      their Internet customers. IPv6-based Internet Service SHOULD
      be via native IPv6 network service but MAY be via IPv6
      transition mechanisms if necessary. 
 2.2.2 Organizations MUST arrange for IPv6-based Interent
      connectivity for any Internet-facing servers (e.g. web,
      email, and domain name servers).  Internet-facing IPv6
      servers SHOULD be treated as production by the organization,
      and MAY be treated as production by other Internet
      organizations.
 2.2.3 Organizations SHOULD provide IPv6-based Internet connectivity
      to their internal user communities, and provide IPv6 internal
      supporting servers (e.g. DNS, DHCP). IPv6-based Internet
      connectivity MAY be via native IPv6 network service or MAY
      be via IPv6 transition mechanisms. 

2.3 Post-Transition Phase - January 2011 to the Future

 In the Post-Transition Phase, entities provide all Internet-facing
 services via IPv6-based connectivity.

 During the Post-Transition Phase, the following principles apply:
 2.3.1 Service Providers MUST offer IPv6-based Internet Service to
      their Internet customers. IPv6-based Internet Service SHOULD be
      via native IPv6 network service but MAY be via IPv6 transition
      mechanisms if necessary.  IPv6-based Internet Service SHOULD be
      treated as production by other Internet organizations.
 2.3.2 Organizations MUST arrange for IPv6-based Internet connectivity
      for any Internet-facing servers (e.g. web, email, and domain 
      name servers).  Internet-facing IPv6 servers MUST be treated
      as production by the organization, and SHOULD be treated as
      production by other Internet organizations.
 2.3.3 Organizations SHOULD provide IPv6-based Internet connectivity to
      internal user communities, and provide IPv6 internal supporting
      servers (e.g. DNS, DHCP)  IPv6-based Internet connectivity MAY
      be via native IPv6 network service or MAY be via IPv6 transition
      mechanisms. 
 2.3.4 Service Providers area MAY continue to offer IPv4-based Internet
      connectivity to their customers.  Organizations MAY continue to
      use IPv4-based Internet connectivity.  Organizations MAY remove
      IPv4-based Internet connectivity from Internet-facing servers.