the CHILD_SA with the correct mark is selected on the responder side, each CHILD_SA is
bound to an IKE_SA of its own with a distinct IKEv2 ID but sharing the same PSK.
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-Upon the successful establishment of the IPsec tunnel, <b>leftfirewall=yes</b> automatically
-inserts iptables-based firewall rules that let pass the tunneled traffic.
+Upon the successful establishment of the IPsec tunnel, the updown script automatically
+inserts iptables-based firewall rules that let pass the tunneled traffic
In order to test both tunnel and firewall, client <b>alice</b> behind gateway <b>moon</b>
pings client <b>bob</b> located behind gateway <b>sun</b>.