Brian E Carpenter wrote:
Incidentally, RFC 2460 is clear that unknown headers should cause the
packet to be dropped, so the transition strategy is tricky in any case.
If, as a result of processing a header, a node is required to proceed
to the next header but the Next Header value in the current header is
unrecognized by the node, it should discard the packet and send an
ICMP Parameter Problem message to the source of the packet, with an
ICMP Code value of 1 ("unrecognized Next Header type encountered")
and the ICMP Pointer field containing the offset of the unrecognized
value within the original packet.
So are you _really_ sure you want to drop RH0 from the IPv6 protocol
spec, given that the practicalities of a general use 'replacement'
header is going to present some fascinating transition issues?
Geoff
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