IPv6 MTUs smaller than 1280 bytes?

[Fernando Gont]

Brian E Carpenter wrote:

>> Technology that cannot do larger MTUs because of the way the technology
>> is specified (imagine ATM without SAR at the VC endpoints) cannot be 
>> fixed without changing standards, upgrading lots of different vendor
>> implementations, etc.
> 
> What's supposed to happen then is that the logical link layer handles
> fragmentation as a link layer (or maybe layer 2.5) function, so that
> the IPv6 layer still sees at least 1280.

I am told there are technologies for which IPv6 does not see at least
1280 bytes -- hence the original question, and the request for details
about how bill manning found such <1280 MTUs.

Thanks!

Kind regards,
-- 
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at acm.org
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1