The example mentions a subnet of 192.168.1.0/24 however the iptables command uses 192.168.0.0/24. I'm attaching a diff.
Created attachment 92023 [details] Patch for s1-vpn-cipe-client.html This patch corrects the subnet used in 2 places.
Thank you for the report and patch. This will be corrected and an errata issued shortly. Thanks again.