Cisco 300 Series Cli Manual page 727

IPv6 Router Commands
78-21075-01 Command Line Interface Reference Guide
Use the no form of this command to remove the address from the interface.
Syntax
ipv6 address autoconfig
no ipv6 address autoconfig
Parameters
N/A.
Default Configuration
Stateless Auto configuration is disabled.
Command Mode
Interface Configuration mode.
User Guidelines
This command enables IPv6 on an interface (if it was disabled) and causes the
switch to perform IPv6 stateless address auto-configuration to discover prefixes
on the link and then to add the eui-64 based addresses to the interface.
Stateless auto configuration is applied only when IPv6 Forwarding is disabled.
When IPv6 forwarding is changed from disabled to enabled, and stateless auto
configuration is enabled the switch stops stateless auto configuration and
removes all stateless auto configured ipv6 addresses from all interfaces.
When IPv6 forwarding is changed from enabled to disabled and stateless auto
configuration is enabled the switch resumes stateless auto configuration.
Using the no ipv6 address autoconfig command to disable stateless auto
configuration and to remove all stateless auto configured IPv6 addresses from an
interface.
Example
The following example assigns the IPv6 address automatically:
interface vlan 100
ipv6 address autoconfig
exit
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