The roadwarrior <b>carol</b> sets up a connection to gateway <b>moon</b>.
The authentication is based on <b>X.509 certificates</b>.
In order to test the IPv6 ESP tunnel, <b>carol</b> sends an IPv6 ICMP request
to the client <b>alice</b> behind the gateway <b>moon</b> using the ping6
command.
