Telematics Chapter 6: Network Layer - Freie Universität Berlin

IPv6 Extension Headers
● Optional data follows in extension headers. There are 6 headers defined:
● Hop-by-Hop (information for single links)
All routers have to examine this field.
● Momentarily only the support of Jumbograms (packets exceeding the normal IP packet
length) is defined (length specification).
● Routing (definition of a full or partly specified route)
● Fragment (administration of fragments)
● Difference to IPv4: Only the source can do fragmentation. Routers for which a packet is
too large, only send an error message back to the source.
● Authentication (of the sender)
● Encapsulating security payload (information about the encrypted payload)
● Destination options (additional information for the destination)
● Each extension should occur at most once!
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 6: Network Layer
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