This is a generic message, stating that the IKE negotiation is failing, and when it tries to retransmit, it fails. It repeats that cycle over and over. This is regardless of if you use route based vpn, or policy based vpn. You will need to verify if the proposals are actually matching with whatever Azure is listening for. With any VPN, you need to troubleshoot by looking at all messages from both sides of the VPN, and not just one side.
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