Error Message:

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Loopback was detected.

Explanation:

The local and remote computers that are involved in the PPP conversation are the same computer. This usually means that a device (for example, a modem) on the link is echoing characters back.

User Action:

Try resetting these devices. For other vendor's servers, it might indicate that the remote computer is attempting a teletypewriter (TTY) login before connecting. You can configure the connection for a post-connect terminal on the Security tab.