UDP truncation

[Raul Dias]

Many years ago, I use to have a similar problem with PPPoE, which made 
the mtu lower than the ethernet's mtu.
In the end I end up lower the mtu to make sure there was no fragmentation.

On 24/05/2016 08:04, Vladimir Kudrya wrote:
>> Tinc will fragment UDP packets that are larger than the discovered path
>> MTU and that don't have the DF bit set. Could it be that you have a
>> firewall rule somewhere that is blocking fragments?
>>
> You mean inside network? No, nothing is blocked inside, and nothing 
> specifically blocks fragmented on outside routes (unless providers 
> messing with traffic).
> For now I worked around this by setting tinc's tap device mtu to 1300 
> on every host. But any other clues would be handy.
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-- 
Att. Raul Dias

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