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Date: Fri, 27 Jan 2012 21:21:54 +0530 From: Nanda Kumar <heramba85@...il.com> To: Eric Dumazet <eric.dumazet@...il.com> CC: netdev@...r.kernel.org, davem@...emloft.net Subject: Re: Default TCP Options creating problems 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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