{"draft":"draft-ietf-softwire-mesh-multicast-25","doc_id":"RFC8638","title":"IPv4 Multicast over an IPv6 Multicast in Softwire Mesh Networks","authors":["M. Xu","Y. Cui","J. Wu","S. Yang","C. Metz"],"format":["ASCII","HTML"],"page_count":"19","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Softwires","abstract":"During the transition to IPv6, there are scenarios where a backbone\r\nnetwork internally running one IP address family (referred to as the\r\ninternal IP or I-IP family) connects client networks running another\r\nIP address family (referred to as the external IP or E-IP family).\r\nIn such cases, the I-IP backbone needs to offer both unicast and\r\nmulticast transit services to the client E-IP networks.\r\n\r\nThis document describes a mechanism for supporting multicast across\r\nbackbone networks where the I-IP and E-IP protocol families differ.\r\nThe document focuses on the IPv4-over-IPv6 scenario, due to lack of\r\nreal-world use cases for the IPv6-over-IPv4 scenario.","pub_date":"September 2019","keywords":["Multicast","Mesh","SSM","ASM"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC8638","errata_url":null}