ipv6 address link-local

Function

The ipv6 address link-local command manually configures a link-local address for a specified interface.

The undo ipv6 address link-local command deletes the manually configured link-local address on an interface.

By default, no link-local address is configured for an interface.

Format

ipv6 address ipv6-address link-local

undo ipv6 address ipv6-address link-local

Parameters

Parameter	Description	Value
ipv6-address	Specifies the IPv6 address of an interface.	The value consists of 128 octets, which are classified into 8 groups. Each group contains 4 hexadecimal numbers in the format X:X:X:X:X:X:X:X. When a link-local address is being configured, the prefix of the specified IPv6 address must match FE80::/10.

Views

Interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Link-local addresses are used for the communication between nodes on the same local link in neighbor discovery or stateless autoconfiguration. The packet with a link-local address being the source or destination address will not be forwarded to other links. That is, link-local addresses are valid only on local links.

You can run the ipv6 address link-local command to manually configure a link-local address for an interface.

Prerequisites

The IPv6 function has been enabled on the interface using the ipv6 enable command in the interface view.

Precautions

Avoid changing link-local addresses.

You can configure multiple IPv6 addresses but only one link-local address for an interface.

The link-local address configured using the ipv6 address link-local command will override the link-local address automatically generated by the system.

The undo ipv6 address link-local command deletes only the link-local address manually configured for an interface. To delete the automatically generated link-local address, run the undo ipv6 address auto link-local command.

If an interface is being unbound from the VPN instance that has IPv6 address family enabled, the system displays a message, indicating that this command cannot be run.

The following IPv6 addresses cannot be configured for an interface:

Loopback address (::1/128)
Unspecified address (::/128)
Multicast address

Example

# Manually configure a link-local address for VLANIF 2.

<HUAWEI> system-view
[HUAWEI] ipv6
[HUAWEI] interface vlanif 2
[HUAWEI-Vlanif2] ipv6 enable
[HUAWEI-Vlanif2] ipv6 address fe80::1 link-local

# Manually configure a link-local address for GE0/0/1.

<HUAWEI> system-view
[HUAWEI] ipv6
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] ipv6 enable
[HUAWEI-GigabitEthernet0/0/1] ipv6 address fe80::1 link-local