Unable to add multiple ip addresses on single ip_restriction rule

Terraform Providers Azure
1

Azure allow 8 Ip addresses to add in single ip restriction rule to for azure windows webapp but not able to achieve same using terraform

site_config {

   ip_restriction {

“ip_address” = “1.2.3.4/32,5.6.7.8/28,9.1.2.3/26”
}

If I use the above approach it gives error site_config.ip_restriction.ip_address must start with IPV4 address and/or slash, number of bits (0-32) as prefix. Example: 127.0.0.1/8 . Got “1.2.3.4/32,5.6.7.8/28,9.1.2.3/26”

Now if I have separate rule for each IP address my list will be exhausted as I have too many addressers. Please suggest how to add multi source rule through terraform.