RFC 2507 IP Header Compression February 1999 4.1. Guidelines for grouping packets...................15 5. Size Issues..............................................16 5.1. Context identifiers...............................16 5.2. Size of the context...............................17 5.3. Size of full headers..............................18 5.3.1. Length fields in full TCP headers............19 5.3.2. Length fields in full non-TCP headers........19 6. Compressed Header Formats................................20 7. Compression of subheaders................................22 7.1. IPv6 Header.......................................24 7.2. IPv6 Extension Headers............................25 7.3. Options...........................................25 7.4. Hop-by-hop Options Header.........................26 7.5. Routing Header....................................26 7.6. Fragment Header...................................27 7.7. Destination Options Header........................28 7.8. No Next Header....................................29 7.9. Authentication Header.............................29 7.10. Encapsulating Security Payload Header.............29 7.11. UDP Header........................................30 7.12. TCP Header........................................30 7.13. IPv4 Header.......................................33 7.14 Minimal Encapsulation header......................34 8. Changing context identifiers.............................35 9. Rules for dropping or temporarily storing packets........35 10. Low-loss header compression for TCP .....................36 10.1. The "twice" algorithm............................37 10.2. Header Requests..................................37 11. Links that reorder packets...............................38 11.1. Reordering in non-TCP packet streams.............39 11.2. Reordering in TCP packet streams.................39 12. Hooks for additional header compression..................40 13. Demultiplexing...........................................41 14. Configuration Parameters.................................42 15. Implementation Status....................................43 16. Acknowledgments..........................................44 17. Security Considerations..................................44 18. Authors' Addresses.......................................45 19. References...............................................46 20. Full Copyright Statement.................................47 Degermark, et. al. Standards Track