Hi,

>From: Ryota Hirose <[EMAIL PROTECTED]>
>Date: Thu, 21 Jul 2005 08:01:52 +0900 (JST)

> Please refer RFC2467, which is about FDDI.  FDDI's MTU is variable by

Please refer RFC2497 also. It is about ARCnet.  ARCnet's maximum MTU
is 60480, but RFC2497 says that it is impractical, so provides that
default MTU for IPv6 is 9072.  And says,

   In the presence of a router, this size MAY be changed by a Router
   Advertisement [DISC] containing an MTU option. If a Router
   Advertisement is received with an MTU option specifying an MTU larger
   than 60480, or larger than a manually configured value less than
   60480, that MTU option may be logged to system management but MUST be
   otherwise ignored.

RFC2497 use a word 'be changed' instead of 'be reduced', because
ARCnet can increase MTU to 60480.

Ryota Hirose
Yamaha Corporation


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