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The Freepbx sysadmin network configuration only supports the first method (Using interfaces configuration). If your system’s network is configured using any other method, the sysadmin module will display the warning below on the dashboard and networks settings page.
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Sysadmin Network settings configuration
Logging in
In the top menu, click Admin.
In the drop-down, click System Admin.
In the right-hand navigation menu, click Network Settings.
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