On Thu, Feb 27, 2014 at 11:00 AM, Stuart Henderson <[email protected]> wrote:
>
> Try tcpdumping packets going over the ipsec tunnel, do you see those packets
> which should be local actually being sent over the tunnel? If so, I don't have
> an answer for this, but I've seen it myself, though only with manually
> configured ipsec rather than IKE (though I've only really tried IKEv1 with
> isakmpd, not IKEv2). I've mentioned it to a few people but haven't heard any
> possible explanations yet.
>

Hi Stuart,

It seems to be what I am facing: (tcpdump output on box1 when
performing a telnet box1_ip (192.168.150.16) to port 22 on box1)
box1:~#  tcpdump -envps 1500 -i enc0 -l
tcpdump: listening on enc0, link-type ENC
11:18:15.258255 (authentic,confidential): SPI 0xf704e810:
192.168.150.13 > 192.168.150.16: 192.168.150.16.33636 >
192.168.150.16.22: S [tcp sum ok] 724448283:724448283(0) win 16384
<mss 33152,nop,nop,sackOK,nop,wscale 3,nop,nop,timestamp 2973607861 0>
(DF) [tos 0x10] (ttl 64, id 47660, len 64) (DF) [tos 0x10] (ttl 64, id
59798, len 84, bad cksum 0!)
11:18:15.258422 (authentic,confidential): SPI 0xf704e810:
192.168.150.13 > 192.168.150.16: 192.168.150.16.33636 >
192.168.150.16.22: S [tcp sum ok] 724448283:724448283(0) win 16384
<mss 33152,nop,nop,sackOK,nop,wscale 3,nop,nop,timestamp 2973607861 0>
(DF) [tos 0x10] (ttl 64, id 47660, len 64) (DF) [tos 0x10] (ttl 64, id
59798, len 84)

Is that a bug or just normal behavior and is there any way to get around it?

Cheers,
Josh

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