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    • Why did I lose internet connectivity on my instance?

    in OCI - General

    Summary:

    OCI instance (MikroTik) within a VCN is experiencing limited outbound internet connectivity. It can ping some Oracle Cloud Infrastructure IP addresses, but not general internet destinations like Google's DNS or standard websites. Routing, security lists, and VCN configurations have been verified, suggesting a potential issue with the Internet Gateway or upstream network.

    Content (please ensure you mask any confidential information):

    • The instance, a MikroTik router, is deployed within an OCI VCN (vcn-20240126-****) in the mx-queretaro-1 region.
    • The instance has a public IP address (X.X.X.X) and a private IP address (10.0.0.218) within the subnet (subnet-20240126-2230, 10.0.0.0/24).
    • The VCN uses the default route table (Default Route Table for vcn-20240126-****), which has a default route (0.0.0.0/0) pointing to an Internet Gateway (Internet Gateway vcn-20240126-****).
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