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Command Reference Guide
ipv6 address autoconfig
Use the ipv6 address autoconfig command to enable Internet Protocol version 6 (IPv6) processing on the
interface, create a local-link IPv6 address for the interface, and allow the interface to automatically
configure itself based on advertisements from other routers on the link. Use the no form of this command
to remove all autoconfigured addresses, prefixes, and any resulting routes from the interface and also
causes the interface to cease processing received router advertisements (RAs).Variations of this command
include:
ipv6 address autoconfig
ipv6 address autoconfig default
ipv6 address autoconfig default metric <value>
Syntax Description
default
metric <value>
Default Values
By default, no IPv6 addresses are configured for the interface and IPv6 processing is not enabled. When
an IPv6 address is configured automatically, the administrative distance for default routers is 2 by default.
Command History
Release 18.1
Release R10.1.0
Functional Notes
When autoconfiguration is enabled, the interface listens for RA messages that tell the interface how it
should be configured. The interface then creates addresses for advertised 64-bit prefixes with the A flag in
the IPv6 address set using stateless address autoconfiguration (SLAAC). The addresses use the EUI-64
interface ID in the lower 64 bits of the address. A route type of Connected is added to the route table if the
L flag on the prefix advertisement (on-link flag) is also set.
Usage Examples
The following example enables IPv6 processing on the interface, creates a link-local IPv6 address for the
interface, and allows the interface to automatically configure itself for IPv6:
(config)#interface tunnel 1
(config-tunnel 1)#ipv6 address autoconfig
60000CRG0-35E
Optional. Specifies that the interface maintain a list of advertising routers
that are willing to be IPv6 default routers.
Optional. Specifies the administrative distance for a default router
maintained in the default router list. Range is 1 to 255. Routes with lower
administrative distance are favored.
Command was introduced.
Command was expanded to include the tunnel interface.
Copyright © 2012 ADTRAN, Inc.
Tunnel Interface Command Set
2654
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