# NAME

MoveFreq - CoA changes frequently

# TARGET

    Host

# SYNOPSIS

    MoveFreq.seq [-tooloption ...] -pkt MN_Common.def

>     -tooloption: v6eval tool option

# TOPOLOGY

                                          |
                                          R       TN
                                          |       |
                                  --------+-------+--------------- LinkZ

                                          |
                                          R2             NUT2
                                          |               |
                                  --------+---------------+------- LinkY

                                          |       |
                                          HA2     R1     NUT1
                                          |       |       |
                                  --------+-------+-------+------- LinkX

                              |           |
                 NUT0        HA1          HA0
                  |           |           |
    Link0 --------+-----------+-----------+-----------------------

> `Link0` | `3ffe:501:ffff:100::/64` | `home link`
> `LinkX` | `3ffe:501:ffff:102::/64` | ``
> `LinkY` | `3ffe:501:ffff:103::/64` | ``
> `LinkZ` | `3ffe:501:ffff:104::/64` | ``
> `HA0(Link0)` | `3ffe:501:ffff:100:200:ff:fe00:a1a1/64` | ``
> `HA1(Link0)` | `3ffe:501:ffff:100:200:ff:fe00:a2a2/64` | ``
> `HA2(LinkX)` | `3ffe:501:ffff:102:200:ff:fe00:a3a3` | ``
> `R1(LinkX)` | `3ffe:501:ffff:102:200:ff:fe00:a4a4` | ``
> `R2(LinkY)` | `3ffe:501:ffff:103:200:ff:fe00:a5a5` | ``
> `TN(LinkZ)` | `3ffe:501:ffff:104:200:ff:fe00:a6a6` | ``

# TEST PROCEDURE

    CoA changes frequently

         Loop
            HA0    NUT1     R1      R2
            |       | <---- |       | RA
            | <---- |       |       | Binding Update (*1)
            | ----> |       |       | Binding Acknowledgement
            |      NUT2     |       | (Sleep 1 sec)
            |       | <------------ | RA
            | <---- |       |       | Binding Update (*2)
            | ----> |       |       | Binding Acknowledgement
            |       |       |       |
         Loop

# JUDGEMENT

    (*1) PASS: HA0 receives Binding Update

    (*2) PASS: HA0 receives Binding Update

# REFERENCE

    draft-ietf-mobileip-ipv6-20.txt

11.5.2 Forming New Care-of Addresses

After detecting that it has moved from one link to another (i.e., its current default router has become unreachable and it has discovered a new default router), a mobile node SHOULD generate a new primary care-of address using normal IPv6 mechanisms. A mobile node MAY form a new primary care-of address at any time, but a mobile node MUST NOT send a Binding Update about a new care-of address to its home agent more than MAX_UPDATE_RATE times within a second.