tunnelInsideCidr
The range of inside IPv4 addresses for the tunnel. Any specified CIDR blocks must be unique across all VPN connections that use the same virtual private gateway.
Constraints: A size /30 CIDR block from the 169.254.0.0/16
range. The following CIDR blocks are reserved and cannot be used:
169.254.0.0/30
169.254.1.0/30
169.254.2.0/30
169.254.3.0/30
169.254.4.0/30
169.254.5.0/30
169.254.169.252/30