1. Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the private zone to the on-premises DNS servers. 2. In your Cloud Router, add a custom route advertisement for the IP 35.199.192.0/19 to the on-premises environment.

1. Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the Private zone to the on-premises DNS servers. 2. In your Cloud Router, add a custom route advertisement for the IP 169.254 169.254 to the on-premises environment.

1. Configure a Cloud DNS private zone in the host project of the Shared VPC. 2. Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host project 3. In your Cloud Router, add a custom route advertisement for the IP 169.254 169 254 to the on-premises environment.

1.Configure a Cloud DNS private zone in the host project of the Shared VPC. 2. Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host project. 3. Configure a DNS policy in the Shared VPC to allow inbound query forwarding with your on-premises DNS server as the alternative DNS server.