added new scenarios

testing/tests/ikev2/dpd-clear/description.txt

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+The roadwarrior <b>carol</b> sets up an IPsec tunnel connection to the gateway <b>moon</b>
+which in turn activates <b>Dead Peer Detection</b> (DPD) with a polling interval of 10 s.
+When the network connectivity between <b>carol</b> and <b>moon</b> is forcefully disrupted,
+<b>moon</b> clears the connection after 4 unsuccessful retransmits.
+

testing/tests/ikev2/dpd-clear/evaltest.dat

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+carol::ipsec statusall::home.*INSTALLED::YES
+carol::iptables -A INPUT -i eth0 -s PH_IP_MOON -j DROP::no output expected::NO
+moon::sleep 100::no output expected::NO
+moon::cat /var/log/auth.log::sending DPD request::YES
+moon::cat /var/log/auth.log::sending retransmit::YES
+moon::cat /var/log/auth.log::giving up after 4 retransmits, deleting IKE_SA::YES
+moon::cat /var/log/auth.log::dpd action for rw is DPD_CLEAR::YES
+moon::cat /var/log/auth.log::IKE_SA deleted::YES

testing/tests/ikev2/dpd-clear/hosts/carol/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+	strictcrlpolicy=no
+	plutostart=no
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+
+conn home
+	left=PH_IP_CAROL
+	leftnexthop=%direct
+	leftcert=carolCert.pem
+	leftid=carol@strongswan.org
+	leftfirewall=yes
+	right=PH_IP_MOON
+	rightid=@moon.strongswan.org
+	rightsubnet=10.1.0.0/16
+	keyexchange=ikev2
+	auto=add

testing/tests/ikev2/dpd-clear/hosts/moon/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+	strictcrlpolicy=no
+	plutostart=no
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	leftnexthop=%direct
+	keyexchange=ikev2
+	dpdaction=clear
+	dpddelay=10
+
+conn rw
+	left=PH_IP_MOON
+	leftcert=moonCert.pem
+	leftid=@moon.strongswan.org
+	leftsubnet=10.1.0.0/16
+	right=%any
+	rightid=carol@strongswan.org
+	auto=add

testing/tests/ikev2/dpd-clear/posttest.dat

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+carol::iptables -D INPUT -i eth0 -s PH_IP_MOON -j DROP
+moon::ipsec stop
+carol::ipsec stop

testing/tests/ikev2/dpd-clear/pretest.dat

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+moon::ipsec start
+carol::ipsec start
+carol::sleep 2 
+carol::ipsec up home
+carol::sleep 2

testing/tests/ikev2/dpd-clear/test.conf

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+#!/bin/bash
+#
+# This configuration file provides information on the
+# UML instances used for this test
+
+# All UML instances that are required for this test
+#
+UMLHOSTS="moon carol winnetou"
+
+# Corresponding block diagram
+#
+DIAGRAM="m-c-w.png"
+
+# UML instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS=""
+
+# UML instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol"