+ra_maxinterval integer 600 Maximum time allowed between
+ sending unsolicited RA
+ra_mininterval integer 200 Minimum time allowed between
+ sending unsolicited RA
+ra_lifetime integer 1800 Value to be placed in Router
+ Lifetime field of RA
+ra_useleasetime bool 0 Use configured leasetime as
+ limit for the preferred and
+ valid lifetime of a prefix