https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2854
Michael Tüxen <Michael.Tuexen@xxxxxxxxxxxxxxxxx> changed:
What |Removed |Added
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CC| |[email protected]
| |n.de
--- Comment #1 from Michael Tüxen <Michael.Tuexen@xxxxxxxxxxxxxxxxx> 2008-09-06 05:57:38 PDT ---
I'm assuming that you are capturing traffic on the loopback device on FreeBSD.
1. The verification tag in the common header of the message containing the INIT
chunk must be 0. This is required by RFC 4960.
2. When communicating over the loopback interface the checksum is not
computed by the SCTP implementation for most of the packets to save
CPU. This is FreeBSD specific and not covered by an RFC. However, Wireshark
detects that this is not the correct checksum. Wireshark could be improved
to
to not report the checksum as wrong if it is 0.
In summary: The SCTP implementation and Wireshark behave as intended.
Do you want 0 checksums not being reported as wrong (even if they are
intentionally)?
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