destinationCidrBlock
The IPv4 address range, in CIDR notation, of the route destination. For example:
To add a route for Internet access, enter
0.0.0.0/0
To add a route for a peered VPC, enter the peered VPC's IPv4 CIDR range
To add a route for an on-premises network, enter the Amazon Web Services Site-to-Site VPN connection's IPv4 CIDR range
To add a route for the local network, enter the client CIDR range