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= ROOT|Technical|RFC|rfc2460.txt =

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RFC 2460                   IPv6 Specification              December 1998


   The Type 0 Routing header has the following format:

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |  Next Header  |  Hdr Ext Len  | Routing Type=0| Segments Left |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                            Reserved                           |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                                                               |
    +                                                               +
    |                                                               |
    +                           Address[1]                          +
    |                                                               |
    +                                                               +
    |                                                               |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                                                               |
    +                                                               +
    |                                                               |
    +                           Address[2]                          +
    |                                                               |
    +                                                               +
    |                                                               |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    .                               .                               .
    .                               .                               .
    .                               .                               .
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                                                               |
    +                                                               +
    |                                                               |
    +                           Address[n]                          +
    |                                                               |
    +                                                               +
    |                                                               |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Next Header          8-bit selector.  Identifies the type of header
                        immediately following the Routing header.  Uses
                        the same values as the IPv4 Protocol field
                        [RFC-1700 et seq.].

   Hdr Ext Len          8-bit unsigned integer.  Length of the Routing
                        header in 8-octet units, not including the first
                        8 octets.  For the Type 0 Routing header, Hdr
                        Ext Len is equal to two times the number of
                        addresses in the header.

   Routing Type         0.




 
RFC 2460                   IPv6 Specification              December 1998


   Segments Left        8-bit unsigned integer.  Number of route
                        segments remaining, i.e., number of explicitly
                        listed intermediate nodes still to be visited
                        before reaching the final destination.

   Reserved             32-bit reserved field.  Initialized to zero for
                        transmission; ignored on reception.

   Address[1..n]        Vector of 128-bit addresses, numbered 1 to n.

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