CE                          BNG                    AAA Server
        |                           |                            |
        |---DHCPv6 Solicit--------->|                            |
        |                           |---Access-Request---------->|
        |                           |<--Access-Accept------------|
        |                           |(Softwire46-Configuration   |
        |                           |    Attribute ...)          |
                                  ....
        |                           |                            |
        |                           |<-----CoA-Request-----------|
        |                           |(Softwire46-Configuration   |
        |                           |    Attribute ...)          |
        |                           |------CoA-Response--------->|
        |<--DHCPv6 Reconfigure------|                            |
        |                           |                            |
                                  ....