RFC 1883 IPv6 Specification December 1995 Table of Contents 1. Introduction..................................................3 2. Terminology...................................................4 3. IPv6 Header Format............................................5 4. IPv6 Extension Headers........................................6 4.1 Extension Header Order...................................8 4.2 Options..................................................9 4.3 Hop-by-Hop Options Header...............................11 4.4 Routing Header..........................................13 4.5 Fragment Header.........................................19 4.6 Destination Options Header..............................24 4.7 No Next Header..........................................25 5. Packet Size Issues...........................................26 6. Flow Labels..................................................28 7. Priority.....................................................30 8. Upper-Layer Protocol Issues..................................31 8.1 Upper-Layer Checksums...................................31 8.2 Maximum Packet Lifetime.................................32 8.3 Maximum Upper-Layer Payload Size........................32 Appendix A. Formatting Guidelines for Options...................33 Security Considerations.........................................36 Acknowledgments.................................................36 Authors' Addresses..............................................36 References......................................................37 Deering & Hinden Standards Track