@techreport{guo-softwire-sc-discovery-04, number = {draft-guo-softwire-sc-discovery-04}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/html/draft-guo-softwire-sc-discovery-04}, author = {Dayong Guo and Sheng Jiang and Brian E. Carpenter}, title = {{Softwire Concentrator Discovery Using DHCP}}, pagetotal = 15, year = 2010, month = jul, day = 12, abstract = {Several types of Carrier Grade NATs have been proposed to simplify IPv4/IPv6 transition of the edge network by integrating tunnels and NAT. A very common scenario is that many users set up softwires to a softwire concentrator for public or private access services. In order to establish softwires successfully, a new mechanism is required to enable users in the edge network to discover the information of the concentrator. This document describes how a host or Customer Premises Equipment discovers the remote softwire concentrator or CGN in a hub and spoke network using DHCP. Based on two new Softwire Concentrator Discovery DHCP Options, proposed in the document, a user can obtain the information of the softwire concentrator or CGN and then set up a tunnel to it.}, }