HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Command Reference

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Examples
# Enable stateless address autoconfiguration on interface Ethernet 1/1.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] ipv6 address auto
ipv6 address auto link-local
Use ipv6 address auto link-local to automatically generate a link-local address for an interface.
Use undo ipv6 address auto link-local to remove the automatically generated link-local address for the
interface.
Syntax
ipv6 address auto link-local
undo ipv6 address auto link-local
Default
No link-local address is configured on an interface, and a link-local address is automatically generated
after an IPv6 global unicast address is configured for the interface.
Views
Interface view
Predefined user roles
network-admin
Usage guidelines
Link-local addresses are used for neighbor discovery and stateless autoconfiguration on the local link.
Packets using link-local addresses as the source or destination addresses cannot be forwarded to other
links.
After an IPv6 global unicast address is configured for an interface, an automatically generated link-local
address is the same as the one generated by using the ipv6 address auto link-local command.
Only use the undo ipv6 address auto link-local command to remove the link-local addresses generated
through the ipv6 address auto link-local command.
• After the undo ipv6 address auto link-local command is used on an interface that has an IPv6
global unicast address configured, the interface still has a link-local address.
• If the interface has no IPv6 global unicast address configured, it has no link-local address.
Manual assignment takes precedence over automatic generation.
• If you first adopt automatic generation and then manual assignment, the manually assigned
link-local address overwrites the automatically generated address.
• If you first use manual assignment and then automatic generation, the automatically generated
link-local address does not take effect and the link-local address of an interface is still the manually
assigned address.
If you delete the manually assigned address, the automatically generated link-local address is validated.
For more information about manually assignment of an IPv6 link-local address, see the ipv6 address
link-local command.