Dual Stack Lite (DS-Lite) softwires are supported for CGNAT Next Gen Services. DS-Lite allows service providers to migrate to an IPv6 network while continuing to support IPv4 services; even after the exhaustion of the IPv4 address space. You can natively allocate IPv6 addresses to customers while legacy end-user devices accessing the IPv4 Internet remain same. Thus, IPv4 devices continue to access the IPv4 Internet with minimum disruption on their home networks. DS-Lite also de-couples IPv6 deployment in the service provider network from the rest of the Internet, making incremental deployment easier.
