Whenever you require more than one interface for your application, you can always attach additional interfaces for your requirements.

To attach an interface, follow the below steps:

Step 1: Login to your account.

Step 2: Navigate to Services and then click on My Services.

Step 3: Click on your project.

Step 4: Navigate to Compute and then click on Instances.

Step 5: Choose your instance and click on the Instance name.

Step 6: Click on Select and choose Attach Interface from the drop-down menu.

Step 7: Fill in all the required details and click on Attach Interface.

You will get a success message like "Success: Attaching interface for instance 1X696X14-X5X7-43X9-9XX4-X75XXX02XX3X."