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  2. IPv6 - Wikipedia

    en.wikipedia.org/wiki/IPv6

    IPv6 packet header. An IPv6 packet has two parts: a header and payload. The header consists of a fixed portion with minimal functionality required for all packets and may be followed by optional extensions to implement special features. The fixed header occupies the first 40 octets (320 bits) of the IPv6 packet. It contains the source and ...

  3. Packet switching - Wikipedia

    en.wikipedia.org/wiki/Packet_switching

    In telecommunications, packet switching is a method of grouping data into short messages in fixed format, i.e. packets, that are transmitted over a digital network.