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preferred-lifetime (Dynamic Router Advertisement)


Hierarchy Level


Specify how long the prefix generated by stateless autoconfiguration remains preferred.


seconds—Preferred lifetime, in seconds. If you set the preferred lifetime to 0xffffffff, the lifetime is infinite. The preferred lifetime is never greater than the valid lifetime.

  • Default: 604,800 seconds

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 10.1.