I'm trying to setup a S2S VPN connection between Oracle Cloud and Azure. I am able to get the connection up and it is connected on both ends. After around an hour the Oracle Cloud side dies and the IP-sec status is down on the Oracle side. The Azure side is still in connected state.
I suspected some issue with the IPsec policy so i have played around with different policies but all with the same result. The connection comes up, and dies on Oracle side after around an hour.
I have cross references the settings with both IPsec config support matrixes. https://docs.cloud.oracle.com/en-us/iaas/Content/Network/Reference/supportedIPsecparams.htm https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-about-compliance-crypto
I reached out to OCI support and they got this PFS2 Group changed from Group5 on the OCI side within 2hrs. Granted it takes almost 20mins to open up a ticket with all of the OCID info but the Sev1 Team got it done quick.