>In RFC1981, Path MTU Discovery for IPv6, page 4, it is mentioned that:
>
>A node MUST NOT reduce its estimate of the Path MTU below the IPv6 minimum
>link MTU.
>Note: 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].
see RFC2460 section 5, very beginning.
itojun
---
5. Packet Size Issues
IPv6 requires that every link in the internet have an MTU of 1280
octets or greater. On any link that cannot convey a 1280-octet
packet in one piece, link-specific fragmentation and reassembly must
be provided at a layer below IPv6.
--------------------------------------------------------------------
IETF IPng Working Group Mailing List
IPng Home Page: http://playground.sun.com/ipng
FTP archive: ftp://playground.sun.com/pub/ipng
Direct all administrative requests to [EMAIL PROTECTED]
--------------------------------------------------------------------
