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Ubuntu supports IPv6 as well as the “classic” IPv4. All combinations of IPv4 and IPv6 (IPv4-only, IPv6-only and dual-stack configurations) are supported.
Autoconfiguration for IPv4 is done via DHCP (Dynamic Host Configuration Protocol). Autocon- figuration for IPv6 supports stateless autoconfiguration using NDP (Neighbor Discovery Protocol, including recursive DNS server (RDNSS) assignment), stateful autoconfiguration via DHCPv6 and mixed stateless/stateful autoconfiguration (address configuration via NDP, additional parameters via DHCPv6).
6.3.1.6. Configuring the Clock and Time Zone