I just re-read RFC 2460 section 5. Admittedly things are less clear for IPv4, but it seems clear that IPv6 senders should not exceed 1280 bytes (pre-encapsulation) unless they have succeeded in discovering a larger path MTU.
Nice to hear some good news for a change. ;-) Thanks, Dino -- to unsubscribe send a message to rrg-request@psg.com with the word 'unsubscribe' in a single line as the message text body. archive: <http://psg.com/lists/rrg/> & ftp://psg.com/pub/lists/rrg