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Date:   Mon, 9 Jan 2017 10:08:03 +0800
From:   Sun Paul <paulrbk@...il.com>
To:     Neil Horman <nhorman@...driver.com>
Cc:     linux-sctp@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Problem on SCTP

Hi

the INIT chunk arrive on the SERVER, but then no response. the
application that using in SERVER is the same as the other test.

I noticed one thing in Ethernet frame of the incoming packet on the
SERVER compared to the one captured from the client is the LG bit on
the source address.

The LG bit is set to 0 on the request packet received in the
SERVER,but it is 0 from the one originated on the client. willl it be
the root cause?



On Fri, Jan 6, 2017 at 8:37 PM, Neil Horman <nhorman@...driver.com> wrote:
> On Fri, Jan 06, 2017 at 05:34:47PM +0800, Sun Paul wrote:
>> Hi
>>
>> I am setting up a lab where the SCTP traffics from  client is passing
>> through a linux router before reaching to the SCTP server running
>> LKSCTP.
>>
>> The linux router did not change the source address of the client, so
>> when it arrived to the SCTP server, the source address is the oriingal
>> one.
>>
>> however, I found that there is no response from the SCTP server, any
>> idea on this?
>>
>> if I connect the client directly to the SCTP server, it do not have any issue.
>>
>> help pls
>>
>> rbk
>> --
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>>
>
> Start with a tcpdump on the client and the server and attempt a connection,
> check to see if the INIT and INIT-ACK chunks are arriving appropriately.
>
> Neil
>

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