DecrementLifetimes

If this option is enabled, the preferred and valid lifetime of the prefix in the router advertisements are automatically counted down over time or extended. The preferred and valid lifetimes of the prefix in the router advertisements are synchronized with the times from the delegated prefix as retrieved from the WAN. If the prefix from the provider is not updated, then the preferred and valid lifetimes are counted down to 0, and thus expire. As soon as the device updates the lifetimes of the delegated prefix from the WAN, then the prefix in the router advertisements is extended again. If this option is disabled, are preferred and valid lifetime from the delegated prefix are applied statically, but they not reduced or extended. This parameter has no effect on tunneled WAN connections (6to4, 6in4 and 6rd), because in this case the prefixes are not retrieved by DHCPv6 prefix delegation, and thus they have no lifetimes. Here, the statically-configured preferred and valid lifetimes from the prefix are applied. This parameter also has no effect if the value for PD source is left empty, because in this case there is no synchronization with the delegated WAN prefix.

SNMP ID:
2.70.2.1.9 
Console path:
Setup > IPv6 > Router-Advertisement > Prefix-Options
Possible values:
No
Yes
Default:
Yes

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