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Exercises for the interested readerExercises for the interested readerPosted Dec 7, 2010 0:50 UTC (Tue) by mxkb (guest, #71646)In reply to: Exercises for the interested reader by paulj Parent article: Ghosts of Unix past, part 4: High-maintenance designs
Extension headers are considered part of the payload. So even from ipv6 header, you can get payload length, you still have to parse every extension header to find the TCP/UDP header. The difference is in IPV4, you can find the L4 header directly.
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Exercises for the interested reader Posted Dec 7, 2010 10:41 UTC (Tue) by paulj (subscriber, #341) [Link]
Yes, I can see how some might dislike that, but it only applies to end-hosts. So doesn't affect routers, unless I'm missing something? (Indeed, making it more expensive for middle-boxes to unpack and get at the ULPs might even be a good thing in some respects).
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