Hi,
I am not very much experienced with site-to-site VPN. I have set up tunneling with Classic VPN for end to end secure connection. I am able to setup successfully and able to check connectivity between two VM in two different VPC but fails to test private IP connection from Cloud Function/Cloud Run to VM in separate project.
Few suggested to have some issue with routes created within subnet but I can see one route getting created automatically and have all connection open. I am able to check connectivity betwwen two VM so this should not be case.
Cloud Run/Cloud Function is using Serverless VPC Access connectors for outbound traffic and traffic routing is set to "Route all traffic to the VPC". I am unable to test connectivity from serverless to VM.
FYI: I am able to connect if I am setting up HA VPN with BGP but unable to hit private IP from serverless services like Cloud Functions.
I tried few approaches but no luck. I don't know if it needs something extra for Cloud Function/Run to connectivity?
Best Regards
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