Keith Moore wrote:

so it seems like what we need is a bit in the IP header to indicate that
L2 integrity checks are optional, and to specify for various kinds of
IP-over-FOO how to implement that bit in FOO.


How would an app know to set this bit? The problem is that different L2s will have different likelihoods of corruption; you may decide that it's safe to set the bit on Ethernet, but not on 802.11*. And, in general, the app doesn't know all of the L2s that may be involved when it sends a packet.

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|John Stracke      |[EMAIL PROTECTED]   |
|Principal Engineer|http://www.centive.com |
|Centive           |My opinions are my own.|
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|Linux: the Unix defragmentation tool.     |
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