activated iptables in some ikev2 scenarios

testing/tests/ikev2/rw-mark-in-out/posttest.dat

@@ -2,9 +2,9 @@ sun::iptables -t mangle -v -n -L PREROUTING
 sun::ipsec stop
 alice::ipsec stop
 venus::ipsec stop
-alice::/etc/init.d/iptables stop 2> /dev/null
-venus::/etc/init.d/iptables stop 2> /dev/null
-sun::/etc/init.d/iptables stop 2> /dev/null
+alice::iptables-restore < /etc/iptables.flush
+venus::iptables-restore < /etc/iptables.flush
+sun::iptables-restore < /etc/iptables.flush
 sun::ip route del 10.1.0.0/16 via PH_IP_MOON
 sun::conntrack -F
 sun::rm /etc/mark_updown