Customer with domain public

Hi Acme !

We are using the PBRB model , we create a realm, access-control, local-policy for every our customer. 

In realm-config and access-controll we fill in addr-prefix field with their IP publics.

But, an our customer using a public domain instead of their public IPs, because their public IPs are not static, so, how can I config realm-config and access-control with their public domain ?

 

Please give me some advice for this case ?

 

Thank you very much