Multicast VRF leak allows multicast traffic from a sender in one domain or VRF to be forwarded to a different domain or VRF, in which the receivers are connected. In the rest of this document, the VRF to which the multicast sender belongs to is referred to as the ¡°source VRF¡± and the VRF that the multicast receiver belongs to is referred to as the ¡°receiver VRF¡±.