Re: ICMP and unknown extension headers?

[JINMEI Tatuya / $B?@L@C#:H(B]

>>>>> On Thu, 15 Jun 2000 15:03:09 -0700, 
>>>>> Steve Deering <[EMAIL PROTECTED]> said:

> Thus, if the unrecognized value is in a header following a Fragment header,
> then the returned packet is the reassembled packet (or as much of the
> reassembled packet as will fit, if the whole packet doesn't fit).

Agreed.

> If the
> unrecognized value was found after decompressing a packet, the returned
                                     ^^^^^^^^^^^^^you mean decrypting?
> packet is the decompressed packet (if the security rules allow it to be
> sent at all).

Agreed, although (if you meant decrypting) security folks would think
the error should not be sent as a security point of view.
(If you just meant a compressed packet, I completely agree with you.)

ICMP error packets are just for diagnosis. A receiver of the error
should not care about how the returned packet look like, as long as
the receiver can detect the point of the error correctly.

I'm not sure whether this should explicitly stated in an ipng
document, but it would be useful information for implementors.

                                        JINMEI, Tatuya
                                        Communication Platform Lab.
                                        Corporate R&D Center, Toshiba Corp.
                                        [EMAIL PROTECTED]
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