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[Didier Barvaux <question127890@xxxxxxxxxxxxxxxxxxxxx>]

Question #127890 on rohc changed:
https://answers.launchpad.net/rohc/+question/127890

    Status: Open => Answered

Didier Barvaux proposed the following answer:
Hello David,

The ROHC library does not support more than 2 IP headers (all
combinations are supported: IPv4, IPv4/IPv4, IPv4/IPv6, IPv6, IPv6/IPv6,
IPv6/IPv4). One IPv6/IPv6/AH/IPv6 packet is compressed only as
IPv6/IPv6/AH.

The IP profile described in RFC 3843 entitled "RObust Header Compression
(ROHC): A Compression Profile for IP" defines a way to handle your
packet. RFC 3843 reads in its abstract: "This document defines a ROHC
compression profile for IP, similar to the IP/UDP profile defined by RFC
3095, but simplified to exclude UDP, and enhanced to compress IP header
chains of arbitrary length".

Support for this feature is not included in the library yet. There is no
plan to add it as far as I know. However, any help to add this feature
is welcome if you want (and have time) to participate to this project.

Regards,
Didier Barvaux

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