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From: Neil Horman <nhorman@tuxdriver.com>
To: Sun Paul <paulrbk@gmail.com>
Cc: David Laight <David.Laight@aculab.com>,
	"linux-sctp@vger.kernel.org" <linux-sctp@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Problem on SCTP
Date: Mon, 9 Jan 2017 14:18:23 -0500	[thread overview]
Message-ID: <20170109191823.GC20973@hmswarspite.think-freely.org> (raw)
In-Reply-To: <CAFXGftLY1ywdRj79RMHW57oLa9_HNEEcUYRAiM=zs6YHHGVFzw@mail.gmail.com>

On Tue, Jan 10, 2017 at 12:31:01AM +0800, Sun Paul wrote:
> what kind of information do you need? the whole INIT packet?
> 
That would be ideal.

> On Mon, Jan 9, 2017 at 8:25 PM, Neil Horman <nhorman@tuxdriver.com> wrote:
> > On Mon, Jan 09, 2017 at 06:00:36PM +0800, Sun Paul wrote:
> >> Hi
> >>
> >> the linux router just change the destination, so it can arrive on the
> >> the SERVER.
> >>
> > Please post the relevant snippets from the client and server tcpdump
> > operations
> >
> > Neil
> >
> >> On Mon, Jan 9, 2017 at 5:51 PM, David Laight <David.Laight@aculab.com> wrote:
> >> > From: Sun Paul
> >> >> Sent: 09 January 2017 02:08
> >> >
> >> >> >> 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.
> >> >>
> >> >> 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?
> >> >
> >> > Which addresses are you talking about, and what do you mean by the LG bit?
> >> >
> >> > Is your linux 'router' just routing (ie IP forwarding) or is it doing NAT?
> >> > If it is changing the IP addresses then the addresses inside some SCTP
> >> > chunks also need changing.
> >> >
> >> >         David
> >> >
> >>
> --
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> 

  reply	other threads:[~2017-01-09 19:19 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-06  9:34 Problem on SCTP Sun Paul
2017-01-06 11:43 ` Marcelo Ricardo Leitner
2017-01-09  2:06   ` Sun Paul
2017-01-06 12:37 ` Neil Horman
2017-01-09  2:08   ` Sun Paul
2017-01-09  2:30     ` Sun Paul
2017-01-09  9:51     ` David Laight
2017-01-09 10:00       ` Sun Paul
2017-01-09 12:25         ` Neil Horman
2017-01-09 16:31           ` Sun Paul
2017-01-09 19:18             ` Neil Horman [this message]
2017-01-10  1:30               ` Sun Paul
2017-01-10  1:31                 ` Sun Paul
2017-01-10 14:33                 ` Neil Horman
2017-01-11  8:39                   ` Sun Paul
2017-01-11 12:57                     ` Neil Horman
2017-01-12  9:30                       ` Sun Paul
2017-01-12  9:51                         ` David Laight
2017-01-12 10:53                           ` Michael Tuexen
2017-01-13  3:27                             ` Sun Paul
2017-01-13  3:27                               ` Sun Paul
2017-01-13  3:29                               ` Sun Paul
2017-01-13  9:43                                 ` Michael Tuexen
2017-01-13 13:19                                   ` Michael Tuexen
2017-02-21  4:26                                     ` Sun Paul
2017-02-21 15:53                                       ` Xin Long
2017-02-22  1:12                                         ` Sun Paul
2017-02-22  2:00                                           ` Xin Long
2017-02-22  2:29                                             ` Sun Paul
2017-02-22  3:03                                               ` Xin Long
2017-02-23  5:30                                                 ` Sun Paul
2017-02-23  6:07                                                   ` Xin Long
2017-02-27  9:01                                                     ` Sun Paul
2017-02-27 15:06                                                       ` Xin Long
2017-03-01  4:15                                                         ` Sun Paul
2017-03-01  6:43                                                           ` Xin Long
2017-01-16 18:47                                   ` Marcelo Ricardo Leitner

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