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Configuring the Preferred Lifetime

The preferred lifetime for the prefixes in the router advertisement messages specifies how long the prefix generated by stateless autoconfiguration remains preferred. By default, the preferred lifetime is set to 604,800 seconds.

To configure the preferred lifetime, include the preferred-lifetime statement:




preferred-lifetime seconds;

For a list of hierarchy levels at which you can configure this statement, see the statement summary section for this statement.

If you set the preferred lifetime to 0xffffffff, the lifetime is infinite.

The preferred lifetime value must never exceed the valid lifetime value.

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