network Type
The network type of the DB instance. Valid values:
`IPV4`
`DUAL`
The network type is determined by the`DBSubnetGroup`
specified for the DB instance. A`DBSubnetGroup`
can support only the IPv4 protocol or the IPv4 and IPv6 protocols (`DUAL`
). For more information, see Working with a DB instance in a VPC in the Amazon RDS User Guide.