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@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html