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RE: ping packet loss when size gt 1500

>---- Original Message ----
>From: adam.ant@cyberspaceroad.com
>To: debian-user@lists.debian.org
>Subject: RE: ping packet loss when size gt 1500
>Date: Sat, 16 Oct 2010 20:11:46 +0100
>>I thought I knew enough to keep my own home LAN going but I'm stuck
>on this one 
>>and I can't work out what to do next. In fact I thought everything
>was fine 
>>until I tried pinging with big packet sizes.
>>ping -s 1472 www.bbc.co.uk
>>ping -s 1472
>>works fine, no packet loss ever.
>>ping -s 1473 www.bbc.co.uk
>>works fine too.
>>ping -s 1473
>>results in 100% packet loss.
>>I have a bizarre problem with the server at, which is
>an internet 
>>broker whose server keeps disconnecting when making data requests.
>Their support 
>>is blaming the problem on me.
>> is used by a huge number of clients and I apparently
>am the only 
>>one suffering.
>>Could it be something on my LAN? Or could it be my ISP (British
>Telecom) whose 
>>DNS server will randomly go down for a while and then come back (not
>in sync 
>>with the appearance of this problem though) - I thought I'd state
>that to give 
>>an idea of the ISP's reliability.
>>Or is this ping problem definitely something I can sort out and
>perhaps solve it?
Just a guess but I would hypothesize that you have bumped up against
a Maximum Transmission Unit limit.  
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