Took it to 1488. :)
Tomorrow I will contact my ISP for that. I found no info on that issue
on my ISP's website yet...

Thanks again!

Chris Buechler wrote:
> On 6/21/06, John Crowley <jcrowley at gmx dot net> wrote:
>> I'm running m0n0wall v1.22 on WRAP. Forgot that, sorry.
>>
> 
> I asked because some older versions had issues with MSS clamping under
> some circumstances.  1.22 is fine.
> 
> 
>> I set MTU to 1400 and it _works_!! Thanks a lot!
>> Does it make sense to set MTU higher, as far as it still works?
>>
> 
> Yes.  1400 is just a good number to test with.  Using the highest
> possible MTU with things still working will give you very slightly
> better performance (slightly fewer packets on large transfers).  I'd
> try 1460 next, if that works, try going up by 10 until it breaks, then
> back down until you find the sweet spot.  I'm not familiar with ADSL2,
> nor German Internet services, so don't know what the ideal MTU would
> or might be.
> 
> -Chris
> 
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