A method implemented by a slave network edge node at an edge of a service provider network, the slave network edge node to provide accessibility to a wide area network for a customer premise equipment, CPE, upon a failure of a master network edge node, wherein the master network edge node is coupled to the CPE over a wireline link and provides accessibility to the wide area network for the CPE before the failure, the method comprising the steps of: detecting that the master network edge node has failed; sending a failure update message, BFU, by the slave network edge node to a Packet Data Network Gateway, PDN GW, of a Long-Term Evolution, LTE, network, wherein the PDN GW provides a backup channel for the CPE to reach the wide area network over a mobile tunnel (510, 520), and wherein before the failure the mobile tunnel has an end point at the master network edge node, and wherein the failure update message notifies the PDN GW that the end point of the mobile tunnel has changed from the master network edge node to the slave network edge node; receiving a failure acknowledgement message, BFA, by the slave network edge node from the PDN GW in response to the failure update message; routing traffic received by the slave network edge node from the PDN GW over the mobile tunnel to the wide area network; detecting traffic overload at the slave network edge node; sending a first traffic offload request, TOR, by the slave network edge node to a peer network edge node, wherein the first traffic offload request includes a range of prefixes to be offloaded to the peer network edge node, wherein network traffic identifying an address within the range is routed by the PDN GW to the peer network edge node instead of the slave network edge node; and receiving a first traffic offload acknowledgement, TOA, from the peer network edge node, wherein the step of sending the first traffic offload request further comprises: sending a second traffic offload request by the slave network edge node to the PDN GW, wherein the second traffic offload request includes the range of prefixes to be offloaded to the peer network edge node and an address of the peer network edge node; and receiving a second traffic offload acknowledgement from the PDN GW by the slave network edge node. detecting that the master network edge node has failed; sending a failure update message, BFU, by the slave network edge node to a Packet Data Network Gateway, PDN GW, of a Long-Term Evolution, LTE, network, wherein the PDN GW provides a backup channel for the CPE to reach the wide area network over a mobile tunnel (510, 520), and wherein before the failure the mobile tunnel has an end point at the master network edge node, and wherein the failure update message notifies the PDN GW that the end point of the mobile tunnel has changed from the master network edge node to the slave network edge node; receiving a failure acknowledgement message, BFA, by the slave network edge node from the PDN GW in response to the failure update message; routing traffic received by the slave network edge node from the PDN GW over the mobile tunnel to the wide area network; detecting traffic overload at the slave network edge node; sending a first traffic offload request, TOR, by the slave network edge node to a peer network edge node, wherein the first traffic offload request includes a range of prefixes to be offloaded to the peer network edge node, wherein network traffic identifying an address within the range is routed by the PDN GW to the peer network edge node instead of the slave network edge node; and receiving a first traffic offload acknowledgement, TOA, from the peer network edge node, wherein the step of sending the first traffic offload request further comprises: sending a second traffic offload request by the slave network edge node to the PDN GW, wherein the second traffic offload request includes the range of prefixes to be offloaded to the peer network edge node and an address of the peer network edge node; and receiving a second traffic offload acknowledgement from the PDN GW by the slave network edge node. sending a second traffic offload request by the slave network edge node to the PDN GW, wherein the second traffic offload request includes the range of prefixes to be offloaded to the peer network edge node and an address of the peer network edge node; and receiving a second traffic offload acknowledgement from the PDN GW by the slave network edge node.