Why does the Vpc construct create a dependency on "DefaultRoute" and "RouteTableAssociation" in version 2, but not version 1?

[sbrattla]

I'm working on migrating an AWS CDK project from v1 to v2. The following piece of code gives different between v1 and v2 :

        Vpc(
            self,
            "upright_vpc",
            ip_addresses=IpAddresses.cidr(vpc_cidr),
            enable_dns_hostnames=True,
            enable_dns_support=True,
            max_azs=3
        )

In v2, I get the following additional output :

[~] AWS::EC2::NatGateway test/network-stack/upright_vpc/PublicSubnet1/NATGateway uprightvpcPublicSubnet1NATGateway86E25FDE 
 └─ [+] DependsOn
     └─ ["uprightvpcPublicSubnet1DefaultRoute900852B5","uprightvpcPublicSubnet1RouteTableAssociation7B05C537"]

Why are the dependencies on DefaultRoute and RouteTableAssociation created with v2, but not v1?

[fjaspers]

Did you figure this out?