Pekka Savola wrote:
>
> Your confusion may be based on the difference that in IPv4, routers also
> may fragment packets. IPv6 fragmentation is end-to-end, and you either
> use minimum MTU 1280, or implement Path MTU Discovery (above).
This makes me think about something strange in Path MTU Discovery.
A note in the section 4 of Path MTU Discovery for IPv6 (RFC1981) say:
"A node may receive a Packet Too Big message reporting a
next-hop MTU that is less than the IPv6 minimum link MTU. In that
case, the node is not required to reduce the size of subsequent
packets sent on the path to less than the IPv6 minimun link MTU,
but rather must include a Fragment header in those packets [IPv6-
SPEC]."
Does this can cause problems with the IPv6 standard that specify that
under 1280 octets, the layer below IPv6 must deal with the
fragmentation ?
-Manu
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