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• Stateless address autoconfiguration—The IPv6 global unicast address is generated
automatically according to the address prefix information contained in the RA message and the
EUI-64 address-based interface identifier.
• Stateful address autoconfiguration—Enables a host to acquire an IPv6 address from a
DHCPv6 server.
You can configure multiple IPv6 global unicast addresses on an interface.
IPv6 link-local address configuration methods
Configure IPv6 link-local addresses by using one of the following methods for an interface:
• Automatic generation—The device automatically generates a link-local address for an
interface according to the link-local address prefix (FE80::/10) and the EUI-64 address-based
interface identifier.
• Manual assignment—An IPv6 link-local address is manually configured.
An interface can have only one link-local address. As a best practice, use the automatic generation
method to avoid link-local address conflicts. If both methods are used, manual assignment takes
precedence.
• If you first use automatic generation and then manual assignment, the manually assigned
link-local address overwrites the automatically generated one.
• If you first use manual assignment and then automatic generation, both of the following occur:
{ The link-local address is still the manually assigned one.
{ The automatically generated link-local address does not take effect. If you delete the
manually assigned address, the automatically generated link-local address takes effect.
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