Problems tunneling XP to linux

[Michael Piko <michael,AT,piko,DOT,com,DOT,au>]

This is driving me nuts!
I have set up cipe on my Linux box.
The cipcb0 comes up with /etc/init.d/network restart and on boot.

on the XP machine, the cipe interface comes up.

From either machine I can ping its own cipe interface.

Cannot ping other end of the tunnel.

Any suggestions would be greatly appreciated!
I am sure that this would have been asked before but I could not find it.

TIA,
Michael.

Here is how I have it set up.

LINUX:
rpm -qa | grep cipe
cipe-1.4.5-9

cat /etc/cipe/options.cipcb0 
device cipcb0 
me 10.0.0.9:1111 
ipaddr 192.168.100.1
ptpaddr 192.168.100.2
peer 10.0.0.253:5000
key 46a05ce71853a20ed310ecd5de778c34 
maxerr -1 

cat /etc/sysconfig/network-scripts/ifcfg-cipcb0 | grep '^[A-Za-z]'
DEVICE=cipcb0
ONBOOT=yes
USERCTL=yes
MYPORT=1111
PEER=10.0.0.253:5000
PTPADDR=192.168.100.2
IPADDR=192.168.100.1

XP:
Installed CIPE-Win32-2.0-pre15.zip

On the Cipe VPN Peer Settings in Control Panel:
LAN Settings:
Local IP Address 10.0.0.253 Port 5000
Peer IP Address 10.0.0.9 Port 1111
Static Key: 46a05ce71853a20ed310ecd5de778c34
Cipher: Blowfish
TimeOut: 600

PTP IP Settings:
Local PTP Address 192.168.100.2
Peer PTP Address 192.168.100.1