Hostname Auto Completion
A hostname can be either a domain name (www.example.com) or an IP address.
For IPv4 addresses, after set environment variable JSA_IP_PREF to a starting part, such as 192.168.1, you can specify the ending part of the IPv4 as hostname, such as 10 or 2.1, and the hostname will be combined from them, and become 192.168.1.10 or 192.168.2.1.