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.