azureip-addressazure-virtual-network

Creating Azure DEV TEST environment, creates overlapping address space


Created a TEST DEV LAB type resource and Azure then automatically creates a virtual network which overlaps the company network. Which I can't seem to change.

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Solution

  • The address space '10.0.0.0/20' overlaps with '10.0.0.0/16' in virtual network 'VirtualNetworkCompany'.

    It is just a warning message. This reminds that if you want to connect to other VNets like "VirtualNetworkCompany" on your side, you should avoid IP address range overlaps with these IP address range in every connected VNets and recreate your VNet to use a different range such as 10.10.0.0/16. If you do not connect the two VNets. You can keep it, it will not impact on your test lab environment.

    Hope this will helps.