vpopConfigMultilinkTunnelGroup 1.3.6.1.4.1.2637.2.1.4005.1.51

Key of tunnel group to use for all multilink PPP calls. If non-zero, all multilink PPP calls to this VPOP will be tunneled to the specified group. If 0, the 'TunnelGroup' parameter determines if and where multilink PPP calls are tunneled.