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IP Header (Version 6)

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IP Header (version 6)

Byte
Offset 0 1 2 3
0 Version Traffic Class Flow Label

4 Payload Length Next Header Hop Limit

8
12 40
Source Address Bytes
16
20

24
28
Destination Address
32
36
1 2 3
Bit 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
Nibble Byte Word

Version Payload Length Next Header Hop Limit

Version of IP Protocol. 4 and 16-bit unsigned integer. 8-bit selector. Identifies the 8-bit unsigned integer.
6 are valid. This diagram Length of the IPv6 payload, type of header immediately Decremented by 1 by each
represents version 6 i.e., the rest of the packet following the IPv6 header. node that forwards the
structure only. following this IPv6 header, in Uses the same values as the packet. The packet is
octets. Any extension IPv4 Protocol field. discarded if Hop Limit is
Traffic Class headers are considered part decremented to zero.
of the payload. Destination Address
RFC 2460
8 bit traffic class field.
128-bit address of the
Source Address intended recipient of the Please refer to RFC 2460
Flow Label for the complete Internet
packet (possibly not the
128-bit address of the Protocol version 6 (IPv6)
20 bit flow label. ultimate recipient, if a
originator of the packet. Specification.
Routing header is present).

Copyright 2006 - Matt Baxter - mjb@fatpipe.org

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