Change content caching Parents options on Mac
Parent content caches provide content to their children. Use the Parents dialog in content caching advanced options to specify the local IP addresses of the parent caches and the policy to use when selecting a parent.
To change these options on your Mac, choose Apple menu > System Preferences , click Sharing, select Content Caching, press and hold the Option key and click Advanced Options, then click Parents.
Parent IP Addresses
The list of local IP addresses for parent caches. Enter the addresses in the order you want them used when a parent cache is selected.
To add an IP address, click Add .
To delete an IP address, click Remove .
The policy to use when selecting a parent cache to use. Click the pop-up menu, then select a parent policy: