z/OS Communications Server: IPv6 Network and Application Design Guide
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Extension headers

z/OS Communications Server: IPv6 Network and Application Design Guide
SC27-3663-00

In IPv6, IP-layer options within a packet are encapsulated in independent headers called extension headers. In contrast, IPv4 options are contained in the IP header itself.

Restriction: Not all IPv6 extension headers are supported in z/OS® Communications Server. The z/OS TCP/IP stack supports receipt of the following extension headers:
  • Routing
  • Fragmentation
  • Hop-by-hop option
  • Destination option
  • Authentication (AH)
  • Encapsulating Security Payload (ESP)

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