No, you do not have to select this CIDR block for the classic network. However, the configuration is the simplest when the 172.16.0.0/12 CIDR block is used.

No, you do not have to select this CIDR block for the classic network. However, the configuration is the simplest when the 172.16.0.0/12 CIDR block is used. For more information about other CIDR blocks, see Overview.