IP Fragmentation - Not reliable over the Internet?

Thu Oct 3 04:58:53 UTC 2013

On 31/08/2013 13:09, Randy Bush wrote:
>>>> i wonder if this is correlated with the high number of probes being
>>>> behind nats.
>>
>> Maybe this provides a bit of insight:
>> From a test last week from all RIPE Atlas probes to a single "known
>> good" MTU 1500 host I compared probes where I had both a ping test with
>> ipv4.len 1020 and ipv4.len 1502.
>> behind NAT probes: 12%  1020 bytes ping worked while 1502 failed
>> non-NATted probes:  6%    ""
> 
> this needs publication on your adventure game of a web site, please.  it
> will seriously 'inform' some discussion going back and forth on ietf
> lists.

This is now published on RIPE Labs. For the adventurous:
https://labs.ripe.net/Members/emileaben/ripe-atlas-packet-size-matters

regards,
Emile Aben
RIPE NCC