road:~#
 TESTNAME=l2tp-04
road:~#
 source /testing/pluto/bin/roadlocal.sh
road:~#
 if [ -f /var/run/l2tpd.pid ]; then kill `cat /var/run/l2tpd.pid`; fi
road:~#
 iptables -F INPUT
road:~#
 iptables -F OUTPUT
road:~#
 ipsec setup stop
ipsec_setup: Stopping Libreswan IPsec...
ipsec_setup: stop ordered, but IPsec does not appear to be running!
ipsec_setup: doing cleanup anyway...
road:~#
 iptables -A INPUT -i eth1 -s 192.1.2.23 -p udp --sport 1701 -j REJECT
road:~#
 iptables -A OUTPUT -o eth1 -d 192.1.2.23 -p udp --dport 1701 -j REJECT
road:~#
 ipsec setup restart
ipsec_setup: Stopping Libreswan IPsec...
ipsec_setup: stop ordered, but IPsec does not appear to be running!
ipsec_setup: doing cleanup anyway...
ipsec_setup: Starting Libreswan IPsec VERSION
road:~#
 ipsec auto --add road--east-l2tp
road:~#
 /testing/pluto/bin/wait-until-pluto-started
road:~#
 ipsec whack --debug-control --debug-controlmore --debug-natt
road:~#
 if [ ! -f /etc/ppp/chap-secrets ]; then mount --bind /testing/pluto/l2tp-01 /etc/ppp; fi
road:~#
 (cd /tmp && l2tpd -c /testing/pluto/l2tp-03/road.l2tpd.conf -D 2>/tmp/l2tpd.log ) &
[1] 9999
road:~#
 ipsec auto --route road--east-l2tp
road:~#
 echo done
done
road:~#
 ipsec auto --up road--east-l2tp
104 "road--east-l2tp" #1: STATE_MAIN_I1: initiate
003 "road--east-l2tp" #1: received Vendor ID payload [Libreswan 
003 "road--east-l2tp" #1: received Vendor ID payload [Dead Peer Detection]
003 "road--east-l2tp" #1: received Vendor ID payload [RFC 3947] method set to=109 
106 "road--east-l2tp" #1: STATE_MAIN_I2: sent MI2, expecting MR2
003 "road--east-l2tp" #1: NAT-Traversal: Result using RFC 3947 (NAT-Traversal): both are NATed
108 "road--east-l2tp" #1: STATE_MAIN_I3: sent MI3, expecting MR3
004 "road--east-l2tp" #1: STATE_MAIN_I4: ISAKMP SA established {auth=OAKLEY_RSA_SIG cipher=oakley_3des_cbc_192 prf=oakley_md5 group=modp1536}
117 "road--east-l2tp" #2: STATE_QUICK_I1: initiate
004 "road--east-l2tp" #2: STATE_QUICK_I2: sent QI2, IPsec SA established
road:~#
 echo "c server" >/var/run/l2tp-control
road:~#
 ipsec look
road NOW
192.1.3.209/32:1701 -> 192.1.2.23/32:1701 => tun0xIPIP@192.1.2.23:17
ipsec0->eth0 mtu=16260(9999)->1500

esp0xKLIPSPIK@192.1.3.209 ESP_3DES_HMAC_MD5: dir=in  src=192.1.2.23 iv_bits=64bits iv=0xIVISFORRANDOM000 ooowin=64 alen=128 aklen=128 eklen=192 natencap=nonesp natsport=4500 natdport=4500  
tun0xTUN#@192.1.3.209 IPIP: dir=in  src=192.1.2.23 policy=192.1.2.23/32->192.1.3.209/32 flags=0x8<> natencap=none natsport=0 natdport=0  
ROUTING TABLE
192.1.2.23 dev ipsec0  scope link 
192.1.3.0/24 dev eth0  proto kernel  scope link  src 192.1.3.209 
192.1.3.0/24 dev ipsec0  proto kernel  scope link  src 192.1.3.209 
default via 192.1.3.254 dev eth0 
road:~#
 sleep 5
road:~#
 telnet 192.0.2.254 2 | wc -l
Connection closed by foreign host.
    834
road:~#
 ifconfig ppp0 | grep 'inet addr'
          inet addr:192.0.2.129  P-t-P:192.0.2.254  Mask:255.255.255.255
road:~#
 echo done
done
road:~#
 

road:~#
road:~#
 grep 'Result using RFC 3947' /tmp/pluto.log
"road--east-l2tp" #1: NAT-Traversal: Result using RFC 3947 (NAT-Traversal): both are NATed
road:~#