activated iptables in some ikev2 scenarios

testing/tests/ikev2/rw-eap-ttls-radius/pretest.dat

@@ -1,6 +1,6 @@
-moon::/etc/init.d/iptables start 2> /dev/null
-carol::/etc/init.d/iptables start 2> /dev/null
-dave::/etc/init.d/iptables start 2> /dev/null
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
 alice::radiusd
 moon::ipsec start
 carol::ipsec start