IPv6 MTUs smaller than 1280 bytes?

[Fernando Gont]

Hi, Bill,

Thanks so much for your response. Just to double-check: is this the
actual MTU, or do you infer such MTU as a result of he advertised TCP
MSS option?

Thanks!

Fernando




bmanning at vacation.karoshi.com wrote:
> yes - we see MTUs of 1220 with some regularity.
> 
> --bill
> 
> 
> On Fri, Sep 10, 2010 at 05:36:52PM -0300, Fernando Gont wrote:
>> Hi,
>>
>> I'm told that in some scenarios, IPv6 operates over link-layers that do
>> not provide an MTU gretear than or equal to 1280 bytes (the IPv6
>> required minimum MTU).
>>
>> Has anybody seen such a thing?
>>
>> P.S.: Yes, I'm aware of what RFC 2460 requires.
>>
>> Thanks,
>> -- 
>> 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
>>
>>
>>
>>
> 

-- 
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