netdev - AW: IPv6 IPSec incompatibilities between 2.6.23 and 3.6.18 (and probably later)

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Message-ID: <DD56476BFBBCB94EA5C5CCFF543EBEC99A0DEC81@ExMbx1.iabg.de>
Date:	Thu, 21 Jul 2016 12:25:19 +0000
From:	Pommnitz Jörg <Pommnitz@...g.de>
To:	Shanker Wang <shankerwangmiao@...il.com>
CC:	Ilan Tayari <ilant@...lanox.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: AW: IPv6 IPSec incompatibilities between 2.6.23 and 3.6.18 (and
 probably later)

Shanker,
as you suggested I have captured the ESP packets for 2.6.23, 3.6.18 and 4.6.4.
The capture took place on the sending interface. I can't see anything suspicious
in any of the three captures.

Regards
  Joerg

> -----Ursprüngliche Nachricht-----
> Von: Shanker Wang [mailto:shankerwangmiao@...il.com]
> Gesendet: Mittwoch, 20. Juli 2016 09:28
> An: Pommnitz Jörg
> Cc: Ilan Tayari; netdev@...r.kernel.org
> Betreff: Re: IPv6 IPSec incompatibilities between 2.6.23 and 3.6.18 (and
> probably later)
>
>
> > 在 2016年7月19日，23:03，Ilan Tayari <ilant@...lanox.com> 写道：
> >
> >> On the receiving side (e.g. fd01:1b10:1000::1) I see the decrypted
> >> packets with the 2.6.23 kernel:
> >> but NOT with the newer kernel:
> >
> > Hi Joerg,
> >
> > First steps to debug this would be:
> > cat /proc/net/xfrm_stat
> > ip -s xfrm state
> > ip -s xfrm policy
> >
> > First command will show some error accounting, which can point to the
> culprit code.
> > Second and third command will show existing objects, and some statistics
> like when the last packet was used with them.
> >
> > Last thing - for your safety you should keep those session keys private.
> >
> > Ilan.
>
> Hi Joerg,
>
> I think maybe you can try tcpdump -w to write the captured packets into a
> file
> and use tools like Wireshark to analyze and see what is going wrong.

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Download attachment "outgoing-lan1-4.6.4.pcap" of type "application/octet-stream" (1054 bytes)

Download attachment "outgoing-lan1-2.6.23.pcap" of type "application/octet-stream" (1054 bytes)

Download attachment "outgoing-lan1-3.6.18.pcap" of type "application/octet-stream" (1054 bytes)