Hello,
the problem already occures before pppd ist started (i don't see any pppd
logging), so it looks like that it has nothing to do with the pppd options
(but i am not sure, because the echo occures during ppp transmission) ...
I have now tried with the rp-l2tp-03, it works fine!
I nearly use the same pppd options ...
I have logged the communication and there is no echo of the send ppp
packets.
Many other people report the same communciation problem with windows
clients, perhaps this echo is really a problem?
It seems to be a timing issue (if windows has a problem with the echo or
not), i my case the linux server is in a virtual machine and therefore very
slow...
l2tp (fails, echo):
1 0.000000 VMware_c0:00:08 Broadcast ARP Who
has 192.168.229.10? Tell 192.168.229.1
2 0.040770 VMware_60:5e:65 VMware_c0:00:08 ARP
192.168.229.10 is at 00:50:56:60:5e:65
3 0.040846 192.168.229.1 192.168.229.10 L2TP
Control Message - SCCRQ (tunnel id=0, session id=0)
4 0.062583 192.168.229.10 192.168.229.1 L2TP
Control Message - SCCRP (tunnel id=4, session id=0)
5 0.062950 192.168.229.1 192.168.229.10 L2TP
Control Message - SCCCN (tunnel id=5761, session id=0)
6 0.063020 192.168.229.1 192.168.229.10 L2TP
Control Message - ICRQ (tunnel id=5761, session id=0)
7 0.063433 192.168.229.1 192.168.229.10 L2TP
Control Message - ZLB (tunnel id=5761, session id=0)
8 0.065831 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=4, session id=0)
9 0.070162 192.168.229.10 192.168.229.1 L2TP
Control Message - ICRP (tunnel id=4, session id=1)
10 0.070423 192.168.229.1 192.168.229.10 L2TP
Control Message - ICCN (tunnel id=5761, session id=54410)
11 0.070489 192.168.229.1 192.168.229.10 L2TP
Control Message - ZLB (tunnel id=5761, session id=0)
12 0.072492 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=4, session id=0)
13 0.111698 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
14 0.155804 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=4, session id=1)
15 0.163972 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Configuration Request
16 0.165077 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Nak
-> echo 17 0.165685 192.168.229.10 192.168.229.1 PPP
LCP PPP LCP Configuration Nak
18 0.166496 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
19 0.167178 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Configuration Request
20 0.167864 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Nak
-> echo 21 0.168913 192.168.229.10 192.168.229.1 PPP
LCP PPP LCP Configuration Nak
22 0.175045 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
-> echo 23 0.187433 192.168.229.10 192.168.229.1 PPP
LCP PPP LCP Configuration Request
24 0.188903 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Termination Request
-> echo 25 0.189780 192.168.229.10 192.168.229.1 PPP
LCP PPP LCP Termination Request
26 0.190551 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Termination Ack
27 0.203068 192.168.229.1 192.168.229.10 L2TP
Control Message - CDN (tunnel id=5761, session id=54410)
28 0.318795 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=4, session id=1)
29 0.319068 192.168.229.1 192.168.229.10 L2TP
Control Message - StopCCN (tunnel id=5761, session id=0)
30 0.319506 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Termination Ack
31 0.349571 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=4, session id=0)
rp-l2tp (ok, no echo):
1 0.000000 VMware_c0:00:08 Broadcast ARP Who
has 192.168.229.10? Tell 192.168.229.1
2 0.002290 VMware_60:5e:65 VMware_c0:00:08 ARP
192.168.229.10 is at 00:50:56:60:5e:65
3 0.002343 192.168.229.1 192.168.229.10 L2TP
Control Message - SCCRQ (tunnel id=0, session id=0)
4 0.034120 192.168.229.10 192.168.229.1 L2TP
Control Message - SCCRP (tunnel id=43, session id=0)
5 0.034547 192.168.229.1 192.168.229.10 L2TP
Control Message - SCCCN (tunnel id=6609, session id=0)
6 0.034619 192.168.229.1 192.168.229.10 L2TP
Control Message - ICRQ (tunnel id=6609, session id=0)
7 0.035086 192.168.229.1 192.168.229.10 L2TP
Control Message - ZLB (tunnel id=6609, session id=0)
8 0.042671 192.168.229.10 192.168.229.1 L2TP
Control Message - ICRP (tunnel id=43, session id=1)
9 0.043004 192.168.229.1 192.168.229.10 L2TP
Control Message - ICCN (tunnel id=6609, session id=28260)
10 0.043072 192.168.229.1 192.168.229.10 L2TP
Control Message - ZLB (tunnel id=6609, session id=0)
11 0.214580 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
12 0.218904 192.168.229.10 192.168.229.1 L2TP
Control Message - ZLB (tunnel id=43, session id=0)
13 0.303403 192.168.229.10 192.168.229.1 0x006f PPP
Stampede Bridging (0x006f)
14 0.305031 192.168.229.10 192.168.229.1 0x006f PPP
Stampede Bridging (0x006f)
15 0.306502 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Configuration Request
16 0.315656 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Ack
17 1.599513 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
18 1.601648 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Configuration Reject
19 1.602782 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Configuration Request
20 1.604365 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Configuration Ack
21 1.605763 192.168.229.10 192.168.229.1 PPP IPCP PPP
IPCP Configuration Request
22 1.606795 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Identification
23 1.608121 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Code Reject
24 1.609093 192.168.229.1 192.168.229.10 PPP LCP PPP
LCP Identification
25 1.610311 192.168.229.10 192.168.229.1 PPP LCP PPP
LCP Code Reject
26 1.620375 192.168.229.1 192.168.229.10 PPP CCP PPP
CCP Configuration Request
27 1.622019 192.168.229.10 192.168.229.1 PPP CCP PPP
CCP Configuration Request
28 1.622776 192.168.229.10 192.168.229.1 PPP CCP PPP
CCP Configuration Reject
29 1.623930 192.168.229.1 192.168.229.10 PPP IPCP PPP
IPCP Configuration Request
30 1.625159 192.168.229.10 192.168.229.1 PPP IPCP PPP
IPCP Configuration Reject
31 1.626237 192.168.229.1 192.168.229.10 PPP IPCP PPP
IPCP Configuration Ack
32 1.628143 192.168.229.1 192.168.229.10 PPP CCP PPP
CCP Configuration Ack
33 1.629881 192.168.229.1 192.168.229.10 PPP CCP PPP
CCP Termination Request
34 1.631007 192.168.229.10 192.168.229.1 PPP CCP PPP
CCP Termination Ack
35 1.632151 192.168.229.1 192.168.229.10 PPP IPCP PPP
IPCP Configuration Request
36 1.633328 192.168.229.10 192.168.229.1 PPP IPCP PPP
IPCP Configuration Nak
37 1.634826 192.168.229.1 192.168.229.10 PPP IPCP PPP
IPCP Configuration Request
38 1.636110 192.168.229.10 192.168.229.1 PPP IPCP PPP
IPCP Configuration Ack
39 1.703455 192.168.229.1 224.0.0.22 IGMP V3
Membership Report
40 1.750953 192.168.229.1 224.0.0.22 IGMP V3
Membership Report
41 1.793054 192.168.229.1 224.0.0.22 IGMP V3
Membership Report
Ulrich
----- Original Message -----
From: "Jacco de Leeuw" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 02, 2003 3:13 PM
Subject: Re: Packet echo?
> Ulrich Holeschak wrote:
>
> > i try to connect via L2TP a Win xp Pro client with a linux server (ipsec
> > disabled, no authentication). Very often i get the "loopback error"
message
> > on the xp client
>
> I never got this error with XP, but I have not disabled IPSEC. I did
> get the same error with Windows 2000 Professional, however. My logfile
> (http://www.jacco2.dds.nl/networking/win2000-l2tpd-error.log.gz)
> is a bit different from yours, though. The PPP server on my Linux
> server sends one LCP ConfReq and then Windows 2000 disconnects
> immediately. So it might be something different. Have you looked
> at the PPP log?
>
> This is a long shot, but could you try adding "silent" to your
> PPP options? Perhaps it helps...
>
> Jacco
> --
> Jacco de Leeuw mailto:[EMAIL PROTECTED]
> Zaandam, The Netherlands http://www.jacco2.dds.nl
> Good guys don't finish last.
> Good guys win before the race has even started.
>
