east:~#
 TESTNAME=mast-l2tp-03
east:~#
 source /testing/pluto/bin/eastlocal.sh
east:~#
 sh /etc/init.d/inetd restart
Restarting internet superserver: inetd.
east:~#
 if [ -f /var/run/l2tpd.pid ]; then kill `cat /var/run/l2tpd.pid`; fi
east:~#
 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
east:~#
 ipsec auto --add client1--east-l2tp
east:~#
 ipsec auto --add client2--east-l2tp
east:~#
 /testing/pluto/bin/wait-until-pluto-started
east:~#
 iptables -A INPUT  -i eth1 -d 192.1.2.23 -p udp --dport 1701 -j REJECT
east:~#
 iptables -A OUTPUT -o eth1 -s 192.1.2.23 -p udp --sport 1701 -j REJECT
east:~#
 if [ ! -f /etc/ppp/chap-secrets ]; then mount --bind /testing/pluto/l2tp-01 /etc/ppp; fi
east:~#
 (cd /tmp && l2tpd -c /testing/pluto/mast-l2tp-03/east.l2tpd.conf -D 2>/tmp/l2tpd.log ) &
[1] 9999
east:~#
 echo done
done
east:~#
 

east:~#
east:~#
 grep 'Result using RFC 3947' /tmp/pluto.log
"client1--east-l2tp"[1] 192.1.2.254 #1: NAT-Traversal: Result using RFC 3947 (NAT-Traversal): peer behind NAT
"client1--east-l2tp"[1] 192.1.2.254 #3: NAT-Traversal: Result using RFC 3947 (NAT-Traversal): peer behind NAT
east:~#