A method comprising: receiving, by an egress network device of a network, a request for multicast traffic from one or more receivers; sending, by the egress network device to an ingress network device of the network, a first multicast control message to establish a primary label switched path, LSP, to the ingress network device, characterized in the first multicast control message including an address of the ingress network device in a field of the first multicast control message that identifies an address of a root node; sending, by the egress network device to a remote loop-free alternate, RLFA, network device, a second multicast control message to establish an RLFA backup LSP to the ingress network device, the second multicast control message including an address of the RLFA network device in a field of the second multicast control message that identifies an address of a root node and including the address of the ingress network device in an opaque data field of the second multicast control message; receiving, by the egress network device from the ingress network device, multicast traffic on the primary LSP and the RLFA backup LSP; and forwarding, by the egress network device, the multicast traffic received on the primary path toward the one or more receivers, wherein the first multicast control message comprises a first multicast Label Distribution Protocol, mLDP, join message, and wherein the field of the first multicast control message that includes the address of the ingress network device comprises a root node address field of a forwarding equivalence class, FEC, element included in the first mLDP join message, wherein the second multicast control message comprises a second mLDP join message, and wherein the field of the second multicast control message that includes the address of the RLFA network device comprises a root node address field of a FEC element included in the second mLDP join message, and wherein the opaque data field of the second multicast control message that includes the address of the ingress network device comprises an Opaque Value field of the FEC element included in the second mLDP join message, and wherein the opaque data field further includes the one or more receiver's interest multicast (S, G) information. receiving, by an egress network device of a network, a request for multicast traffic from one or more receivers; sending, by the egress network device to an ingress network device of the network, a first multicast control message to establish a primary label switched path, LSP, to the ingress network device, characterized in the first multicast control message including an address of the ingress network device in a field of the first multicast control message that identifies an address of a root node; sending, by the egress network device to a remote loop-free alternate, RLFA, network device, a second multicast control message to establish an RLFA backup LSP to the ingress network device, the second multicast control message including an address of the RLFA network device in a field of the second multicast control message that identifies an address of a root node and including the address of the ingress network device in an opaque data field of the second multicast control message; receiving, by the egress network device from the ingress network device, multicast traffic on the primary LSP and the RLFA backup LSP; and forwarding, by the egress network device, the multicast traffic received on the primary path toward the one or more receivers, wherein the first multicast control message comprises a first multicast Label Distribution Protocol, mLDP, join message, and wherein the field of the first multicast control message that includes the address of the ingress network device comprises a root node address field of a forwarding equivalence class, FEC, element included in the first mLDP join message, wherein the second multicast control message comprises a second mLDP join message, and wherein the field of the second multicast control message that includes the address of the RLFA network device comprises a root node address field of a FEC element included in the second mLDP join message, and wherein the opaque data field of the second multicast control message that includes the address of the ingress network device comprises an Opaque Value field of the FEC element included in the second mLDP join message, and wherein the opaque data field further includes the one or more receiver's interest multicast (S, G) information.