RADIUS attribute from rfc6572

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PMIP6-Home-LMA-IPv4-Address

The PMIP6-Home-LMA-IPv4-Address attribute (Type value 149) is of type
   IPv4 address and contains the IPv4 address of the LMA assigned by the
   HAAA.  The  supports Proxy Mobile IPv6 signaling exchange
   between MAG and LMA using the IPv4 transport.

   When the LMA is located in the home network, this attribute MAY be
   sent by the HAAA to the MAG in the RADIUS Access-Accept message.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |      Type     |   Length      |  Home LMA IPv4 address
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       Home LMA IPv4 address       |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Type:
     PMIP6-Home-LMA-IPv4-Address 149.

   Length:
      = 6 octetsHome LMA IPv4 address:
      32-bit IPv4 address of the assigned LMA.

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