I am currently running HyperWRT Thibor build 13 on GSv4 and 13c on GSv3. The GSv4 router has been up over 8 days but has not "touched" the DYNDNS record. I will be upgrading this router to 13c soon, but could not find a definitive answer: Does HyperWRT update the DYNDNS record before the 35 day account deletion deadline? My ISP typically renews the lease with the same IP address for months at a time, so the record needs periodic updating. I used to use DD-WRT and it would update the DYNDNS record every 7 days, even if it did not change. Does HYPERWRT have a fixed interval of updates or does it only update on an IP change? If it does not have a scheduled update, is there a way to force an update at a fixed interval (ie every 7 days) with a startup script? Other posts in the forum lead me to believe that the update does not occur periodically, at least in the older versions.