Got to update checksum of truncated packets #108

ydahhrk opened this Issue Sep 8, 2014 · 0 comments


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ydahhrk commented Sep 8, 2014

When Jool truncates ICMP error messages, it forgets to update the ICMP checksum.

In practice, this shouldn't be a problem because the original packet would have to have been translated by Jool with no problems, and generating an error message bigger than the packet that caused it makes no sense. Therefore, Jool should never have to slice ICMP errors in the first place.

Still, it better be prepared against weird implementations out there.

@ydahhrk ydahhrk self-assigned this Sep 8, 2014
@ydahhrk ydahhrk added this to the 3.2.1 milestone Sep 8, 2014
@ydahhrk ydahhrk added a commit that referenced this issue Sep 12, 2014
@ydahhrk ydahhrk Issue #108. Jool was actually forgetting to update Payload Length; Ch…
…ecksum was correct.

Still, I also refactored a lot of checksumming code, to stop sparse's whining.
@ydahhrk ydahhrk added a commit that referenced this issue Oct 8, 2014
@ydahhrk ydahhrk Merging version 3.2.1 into master, hereby makingthe changes official.
Version 3.2.1 is 3.2.0 with issues #57, #106, #108 and #109 fixed.
Issue #107 has been marked as duplicate and postponed to 3.3.0.

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@ydahhrk ydahhrk closed this Oct 10, 2014
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