You can obtain IPv4 and IPv6 addresses by going to the ACCOUNT section in the upper-right corner of the portal, and then selecting the IP ADDRESSES tab. From there you can choose one or more available IP addresses to add to your account for use when publishing an ALF Pack (configuration).
IP Addresses are available to trial users too at no cost during the trial and are required for all cloud routing and networking solutions such as Cloud Load Balancing and Web Application Firewall.
If you are a trial user, you can keep the IP addresses after the trial for production use if you convert the trial to a paid account before it expires. Reach out to your account manager for further details.