@DG001 Sorry to hear your VM had an outage after being rebooted. It is not clear to me what exactly caused the outage. You are referencing that eth1 was showing as disconnected status and talk about the ethernet config file. Based on this it sounds like there might have been some misconfiguration that caused an impact after the VM was rebooted.
Please make sure that you are configuring your VM properly for multiple interfaces. This page walks you through all the necessary steps to configure this.
If you face this issue in the future you can attempt to Use Azure Linux Auto Repair to fix your VM. I also recommend opening a ticket with our support team so we can troubleshoot the issue directly to find the root cause.
Hope this helps. Let me know if you have any other questions.
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