A list of IPv4 CIDR blocks in your VPC that you want the stream group to be able to access. You can specify up to 5 CIDR blocks. The CIDR blocks must be valid subsets of the VPC's CIDR blocks and cannot overlap with the service VPC CIDR block.
The ID of the Amazon VPC that you want to connect to the stream group. The VPC must be in the same Amazon Web Services account as the stream group. This value cannot be changed after the stream group is created.