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Knowledge base/Troubleshooting OpenVPN Remote Access Client IP Address Assignments

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Troubleshooting OpenVPN Remote Access Client IP Address Assignments

Troubleshooting

If the same certificate has been used for multiple clients (which we do not recommend!), then all clients may be assigned the same IP address when they connect.

To work around this, duplicate connections must be allowed using one of the following methods:

  • Check Duplicate Connections on the OpenVPN server configuration

-or-

Add the following line to the custom options on the server:

duplicate-cn

Imported from the AZTCOFW knowledge base on 2026-09-05. Historical guidance may refer to older software versions. Confirm applicability before changing a production system.

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