--- /dev/null
+The roadwarriors <b>carol</b> and <b>dave</b> set up a connection each to
+gateway <b>moon</b>. Both <b>carol</b> and <b>dave</b> request a <b>virtual
+IP</b> via the IKEv2 configuration payload.
+<p/>
+The gateway <b>moon</b> uses <b>route-based forwarding</b> with <b>VTI
+tunnels</b>, with firewall rules to allow traffic to pass. The IKE daemon is
+configured to not install routes with <em>charon.install_routes=0</em>, and a
+static route is installed for the virtual IP subnet on the VTI device.
+<p/>
+Both <b>carol</b> and <b>dave</b> ping the client <b>alice</b> behind the
+gateway <b>moon</b>. The source IP addresses of the two pings will be the
+virtual IPs <b>carol1</b> and <b>dave1</b>, respectively.
--- /dev/null
+carol::swanctl --list-sas --raw 2> /dev/null::home.*version=2 state=ESTABLISHED local-host=PH_IP_CAROL local-port=4500 local-id=carol@strongswan.org remote-host=PH_IP_MOON remote-port=4500 remote-id=moon.strongswan.org initiator=yes.*child-sas.*home.*state=INSTALLED mode=TUNNEL.*ESP.*local-ts=\[10.3.0.1/32] remote-ts=\[10.1.0.0/16]::YES
+dave:: swanctl --list-sas --raw 2> /dev/null::home.*version=2 state=ESTABLISHED local-host=PH_IP_DAVE local-port=4500 local-id=dave@strongswan.org remote-host=PH_IP_MOON remote-port=4500 remote-id=moon.strongswan.org initiator=yes.*child-sas.*home.*state=INSTALLED mode=TUNNEL.*ESP.*local-ts=\[10.3.0.2/32] remote-ts=\[10.1.0.0/16]::YES
+moon:: swanctl --list-sas --ike-id 1 --raw 2> /dev/null::rw.*version=2 state=ESTABLISHED local-host=PH_IP_MOON local-port=4500 local-id=moon.strongswan.org remote-host=PH_IP_CAROL remote-port=4500 remote-id=carol@strongswan.org.*child-sas.*net.*reqid=1 state=INSTALLED mode=TUNNEL.*ESP.*local-ts=\[10.1.0.0/16] remote-ts=\[10.3.0.1/32]::YES
+moon:: swanctl --list-sas --ike-id 2 --raw 2> /dev/null::rw.*version=2 state=ESTABLISHED local-host=PH_IP_MOON local-port=4500 local-id=moon.strongswan.org remote-host=PH_IP_DAVE remote-port=4500 remote-id=dave@strongswan.org.*child-sas.*net.*reqid=2 state=INSTALLED mode=TUNNEL.*ESP.*local-ts=\[10.1.0.0/16] remote-ts=\[10.3.0.2/32]::YES
+carol::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_.eq=1::YES
+dave::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_.eq=1::YES
+moon::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES
+moon::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
+moon::tcpdump::IP moon.strongswan.org > dave.strongswan.org: ESP::YES
+moon::tcpdump::IP dave.strongswan.org > moon.strongswan.org: ESP::YES
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+swanctl {
+ load = pem pkcs1 x509 revocation constraints pubkey openssl random
+}
+
+charon-systemd {
+ load = random nonce aes sha1 sha2 hmac pem pkcs1 x509 revocation curve25519 gmp curl kernel-netlink socket-default updown vici
+}
--- /dev/null
+connections {
+
+ home {
+ local_addrs = PH_IP_CAROL
+ remote_addrs = PH_IP_MOON
+ vips = 0.0.0.0
+
+ local {
+ auth = pubkey
+ certs = carolCert.pem
+ id = carol@strongswan.org
+ }
+ remote {
+ auth = pubkey
+ id = moon.strongswan.org
+ }
+ children {
+ home {
+ remote_ts = 10.1.0.0/16
+
+ updown = /usr/local/libexec/ipsec/_updown iptables
+ esp_proposals = aes128gcm128-x25519
+ }
+ }
+ version = 2
+ proposals = aes128-sha256-x25519
+ }
+}
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+swanctl {
+ load = pem pkcs1 x509 revocation constraints pubkey openssl random
+}
+
+charon-systemd {
+ load = random nonce aes sha1 sha2 hmac pem pkcs1 x509 revocation curve25519 gmp curl kernel-netlink socket-default updown vici
+}
--- /dev/null
+connections {
+
+ home {
+ local_addrs = PH_IP_DAVE
+ remote_addrs = PH_IP_MOON
+ vips = 0.0.0.0
+
+ local {
+ auth = pubkey
+ certs = daveCert.pem
+ id = dave@strongswan.org
+ }
+ remote {
+ auth = pubkey
+ id = moon.strongswan.org
+ }
+ children {
+ home {
+ remote_ts = 10.1.0.0/16
+
+ updown = /usr/local/libexec/ipsec/_updown iptables
+ esp_proposals = aes128gcm128-x25519
+ }
+ }
+ version = 2
+ proposals = aes128-sha256-x25519
+ }
+}
--- /dev/null
+# /etc/strongswan.conf - strongSwan configuration file
+
+swanctl {
+ load = pem pkcs1 x509 revocation constraints pubkey openssl random
+}
+
+charon-systemd {
+ load = random nonce aes sha1 sha2 pem pkcs1 curve25519 gmp x509 curl revocation hmac vici kernel-netlink socket-default updown
+}
+
+charon {
+ install_routes = 0
+}
--- /dev/null
+connections {
+
+ rw {
+ local_addrs = PH_IP_MOON
+ pools = rw_pool
+
+ local {
+ auth = pubkey
+ certs = moonCert.pem
+ id = moon.strongswan.org
+ }
+ remote {
+ auth = pubkey
+ }
+ children {
+ net {
+ local_ts = 10.1.0.0/16
+ mark_in = 42
+ mark_out = 42
+
+ esp_proposals = aes128gcm128-x25519
+ }
+ }
+ version = 2
+ proposals = aes128-sha256-x25519
+ }
+}
+
+pools {
+ rw_pool {
+ addrs = 10.3.0.0/28
+ }
+}
--- /dev/null
+carol::swanctl --terminate --ike home
+dave::swanctl --terminate --ike home
+moon::systemctl stop strongswan-swanctl
+carol::systemctl stop strongswan-swanctl
+dave::systemctl stop strongswan-swanctl
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+dave::iptables-restore < /etc/iptables.flush
+moon::ip tunnel del vti0
--- /dev/null
+moon::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+dave::iptables-restore < /etc/iptables.rules
+moon::ip tunnel add vti0 local PH_IP_MOON remote 0.0.0.0 mode vti key 42
+moon::sysctl -w net.ipv4.conf.vti0.disable_policy=1
+moon::ip link set vti0 up
+moon::ip route add 10.3.0.0/28 dev vti0
+moon::iptables -A FORWARD -i vti0 -j ACCEPT
+moon::iptables -A FORWARD -o vti0 -j ACCEPT
+moon::systemctl start strongswan-swanctl
+carol::systemctl start strongswan-swanctl
+dave::systemctl start strongswan-swanctl
+moon::expect-connection rw
+carol::expect-connection home
+carol::swanctl --initiate --child home
+dave::expect-connection home
+dave::swanctl --initiate --child home
--- /dev/null
+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou dave"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w-d.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol dave"
+
+# charon controlled by swanctl
+#
+SWANCTL=1