The key exchange is based on NTRU encryption with a cryptographical strength of 128 bit and
192 bit for <b>carol</b> and <b>dave</b>, respectively. Authentication is based on strong
preshared keys (PSKs).
-Both <b>carol</b> and <b>dave</b> request a <b>virtual IP</b> via the IKEv2 configuration payload
+Both <b>carol</b> and <b>dave</b> request a <b>virtual IP</b> via the IKEv1 mode-config payload
by using the <b>leftsourceip=%config</b> parameter. The gateway <b>moon</b> assigns virtual
IP addresses from a simple pool defined by <b>rightsourceip=10.3.0.0/28</b> in a monotonously
increasing order.