How to connect to VPN?

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I tried to establish a secure connection between ROSA and on-premise following this guide https://docs.openshift.com/rosa/cloud_infrastructure_access/dedicated-aws-vpn.html, but it failed.

I want to know what to do specially with this note because is not clear for me:

Note the VPC subnet information, which you must add to your configuration as the remote network.

Does that refer to any of this CIDR?

Machine CIDR:
10.0.0.0/16
Service CIDR:
172.30.0.0/16
Pod CIDR:
10.128.0.0/14

Also, I don't know if this part of troubleshooting is a step I didn't do: Recheck the route table for the VPC. Ensure that propagation is enabled and that there are entries in the route table that have the virtual private gateway you created earlier as a target.

Thanks for your help.

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