ADDING SECONDARY NIC AND IP TO VM

Question

We are trying to establish a vpn connection with a company and we got this message from them "We discovered that the setup of your tunnel using the IP address 10.0.0.102 conflicts with our Oracle Cloud Infrastructure.

Kindly tell the partner to make use of another IP address that is not within the 10.0.0.0/8 block."

We have another vnet that has 172.0.0.0 and it has been peered with 10.0.0.0 we tried to attach addition NIC to the VM and select a static IP from 172. but we could not do that

Answer 1

1. Verify VM Size Compatibility

Ensure your VM size supports multiple NICs. Not all VM sizes in Azure allow multiple NICs. You can check the supported sizes in the Azure documentation.

 

2. Add a Secondary NIC

Deallocate the VM by stopping it.

Navigate to the "Networking" section of the VM in the Azure portal.

Add a new NIC that is connected to the 172.0.0.0 virtual network.

 

3. Assign a Static IP

After adding the NIC, go to the "IP Configurations" of the new NIC.

Change the IP assignment to "Static" and specify an IP address from the 172.0.0.0 range. Detailed steps can be found here.

 

4. Configure the Operating System

Once the NIC is added, you need to configure the operating system of the VM to recognize and use the new NIC. This involves setting up routes for the secondary NIC. Instructions for this step are available here.

 

5. Test Connectivity

Verify that the new IP address is functional and does not conflict with the Oracle Cloud Infrastructure.