From: Nanda Kumar <heramba85@gmail•com>
To: Eric Dumazet <eric.dumazet@gmail•com>
Cc: netdev@vger•kernel.org, davem@davemloft•net
Subject: Re: Default TCP Options creating problems
Date: Fri, 27 Jan 2012 21:21:54 +0530 [thread overview]
Message-ID: <4F22C81A.8090800@gmail.com> (raw)
In-Reply-To: <1327675774.2220.13.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Hi Eric,
On Friday 27 January 2012 08:19 PM, Eric Dumazet wrote:
> Le vendredi 27 janvier 2012 à 19:45 +0530, Nanda Kumar a écrit :
>> Hi,
>>
>> I am using Ubuntu 11.10 and unable to connect to my ISP login server.
>> The same is working under windows. Under linux, ISP server does not
>> respond TCP SYN packet even. I did a comparison of packet capture of
>> windows and linux and found, linux include TCP options by default.
>> After manually disabling TCP Timestamp via sysctl, the login is
>> happening fine.
>>
>> Is there any reason why TCP option is enabled by default? The same
>> problem was happening under OpenSUSE 12.1 x86_64 also. My friend
>> informed me that his android mobile is also unable to connect to ISP
>> login server.
> I am very sorry, but you should complain to your ISP, 20 years after RFC
> 1323, it should support it.
>
> TCP options are ... options, and as such should not be denied by a
> conformant TCP stack.
>
>
>
>
Thank you for the reply. Yes even I feel so. I have put up this issue to
ISP.
However this issue is happening only with TCP timestamp option. All
other options are working fine. Any idea?
Regards,
Nandakumar
next prev parent reply other threads:[~2012-01-27 15:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4F22B17A.2080809@gmail.com>
2012-01-27 14:49 ` Default TCP Options creating problems Eric Dumazet
2012-01-27 15:51 ` Nanda Kumar [this message]
2012-01-27 15:20 ` Eric Dumazet
2012-01-28 2:41 ` NandaKumar
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