Constant DDNS refreshes

[RocketJSquirrel]

This is new. Suddenly, my AC68U running 386.5_2 is logging constant DDNS refreshes. Like every 30 seconds. Ideas?

Jun 14 18:09:03 watchdog: start ddns.
Jun 14 18:09:03 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:09:03 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:09:33 watchdog: start ddns.
Jun 14 18:09:33 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:09:33 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:10:03 watchdog: start ddns.
Jun 14 18:10:03 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:10:03 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:10:33 watchdog: DDNS Recover Time reached, recover DDNS Retry.
Jun 14 18:10:33 watchdog: start ddns.
Jun 14 18:10:33 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:10:33 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:11:03 watchdog: start ddns.
Jun 14 18:11:03 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:11:03 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:11:33 watchdog: start ddns.
Jun 14 18:11:33 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:11:33 start_ddns: IP address, server and hostname have not changed since the last update.
Jun 14 18:12:03 watchdog: start ddns.
Jun 14 18:12:03 rc_service: watchdog 231:notify_rc start_ddns watchdog
Jun 14 18:12:03 start_ddns: IP address, server and hostname have not changed since the last update.

 

[dosborne]

Have you tried a reboot? Sometimes the simplest answer just works

 

[dave14305]

Do you use dual-wan? What is the output of the command:

nvram get ddns_last_wan_unit

Ref: https://github.com/RMerl/asuswrt-me...c9e55b/release/src/router/rc/watchdog.c#L6835

 

[RocketJSquirrel]

Reboot fixed it. Duh. No dual WAN. Sorry for the waste of forum bandwidth.

 

[jfree23]

Reboot fixed it. Duh. No dual WAN. Sorry for the waste of forum bandwidth.

I occasionally get constant DDNS refreshes also, same log entries as OP, AX86U on 386.7.2 and also on previous revs. I do use Let's Encrypt. Not sure what starts it; by the time I look the log is filled with them, 30 sec apart.

FYI, I was able to stop them by just going to the GUI WAN DDNS tab, changing nothing, click Apply. This appears to force a DDNS update, clears the DDNS cache, starts Inadyn. After doing this, the constant DDNS refreshes are gone. Did NOT have to reboot.

 

[RocketJSquirrel]

FYI, I was able to stop them by just going to the GUI WAN DDNS tab, changing nothing, click Apply. This appears to force a DDNS update, clears the DDNS cache, starts Inadyn. After doing this, the constant DDNS refreshes are gone. Did NOT have to reboot.

Thanks for the reply. I continue to see these from time to time also. Good to have a better solution than rebooting.

 

[small_law]

So I'm here in October 2022 because I started seeing this error and and started searching the forms for it. Mine was caused by an internet outage. Once the modem regained a WAN connection, the error started. Kind of makes sense.

Hitting apply on the DDNS page worked as detailed above. Thank you for the solution.