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 by using the <b>vips = 0.0.0.0</b> parameter.
<b>moon</b> assigns virtual IP addresses from a pool named <b>bigpool</b> that was created in
an SQL database by the command
<b>ipsec pool --name bigpool --start 10.3.0.1 --end 10.3.3.232 --timeout 0</b>.
<p>
The updown script automatically inserts iptables-based firewall rules that let pass the
tunneled traffic. In order to test the tunnels, <b>carol</b> and <b>dave</b> then 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>10.3.0.1</b> and <b>10.3.0.2</b>, respectively.
