Reason the PPP link was terminated: none None. other Not specified. adminDisable Interface administratively disabled. lowerLayerDown Underlying interface is down. noUpperInterface No interface above PPP. authenticationFailure Authentication failed. peerTerminated Peer initiated termination. peerRenegotiated Peer initiated renegotiation. maxRetriesExceeded Maximum number of config retries exceeded. negotiationFailure Failed to negotiate LCP option. keepaliveFailure Keepalive failed. sessionTimeout Maximum session period expired. inactivityTimeout Maximum inactivity period expired. addressLeaseExpired Lease for network address expired. adminLogout Session administratively terminated. tunnelFailed Associated tunnel failed. tunnelDisconnected Associated tunnel disconnected. loopback Loopback detected.