Log filled with RTR-ADVERT

[The_Bishop]

Checked on my router this morning as web page loads seemed to be slow.

The system log is filled with these, seems to be every seven seconds or so:
Mar 2 07:28:17 dnsmasq-dhcp[10734]: RTR-ADVERT(br55) 2601:85:c702:fd0:400::
Mar 2 07:28:24 dnsmasq-dhcp[10734]: RTR-ADVERT(br55) 2601:85:c702:fd0:400::
Mar 2 07:28:32 dnsmasq-dhcp[10734]: RTR-ADVERT(br55) 2601:85:c702:fd0:400::
Mar 2 07:28:39 dnsmasq-dhcp[10734]: RTR-ADVERT(br55) 2601:85:c702:fd0:400::

Any ides on what's happening? I can tell it's related to IPV6 but I haven't had this pop up in the logs like this before.

Edit: It's persisting even after a router reboot.

 

[dave14305]

Guest Network Pro doesn’t suppress this logging like the main network does when IPv6 is enabled. You can add quiet-ra to /jffs/configs/dnsmasq-1.conf.add but replace the 1 with whatever guest network instance you have. br55 suggests there might be a few.

 

[The_Bishop]

Ah, thanks. I have two, an IOT network and a guest network.

 

[The_Bishop]

So I got ssh up and going, I'm successfully logged into the router, and even navigated to the correct directory. That file isn't there. /jffs/configs/ is empty. Not sure if I'm doing something wrong, or if I should create the file?

 

[Ripshod]

That's a great tip @dave14305. I had the same so I just run the IoT network without IPv6. I may try your suggestions myself.

 

[dave14305]

So I got ssh up and going, I'm successfully logged into the router, and even navigated to the correct directory. That file isn't there. /jffs/configs/ is empty. Not sure if I'm doing something wrong, or if I should create the file?

Let’s check how the dnsmasq instances are configured right now. Run this to determine what files will need to be created:

grep -HE "enable-ra|quiet-ra" /etc/dnsmasq*

 

[The_Bishop]

This is the output from that command.

/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

 

[dave14305]

This is the output from that command.

/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

Did you disable IPv6 on the Guest Network already?

 

[The_Bishop]

Eh, I may or may not be an idiot this morning. I must have. Here's the correct output.

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

 

[dave14305]

Eh, I may or may not be an idiot this morning. I must have. Here's the correct output.

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

So just run:

echo "quiet-ra" >> /jffs/configs/dnsmasq-4.conf.add
service "restart_dnsmasq 4"

 

[The_Bishop]

Thank you so much. Got it sorted out.

Edit: some kind of oddness. If I add the command to the dnsmasq-4.conf file, and run the grep command, I get:

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq-4.conf:quiet-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

When I restart the service, the quiet-ra gets removed from the config file.

 

[dave14305]

Thank you so much. Got it sorted out.

If Asus or Merlin ever add this to the firmware, you will need to remove the line from the file, in case dnsmasq rejects a duplicate parameter.

 

[RMerlin]

If Asus or Merlin ever add this to the firmware, you will need to remove the line from the file, in case dnsmasq rejects a duplicate parameter.

I will review the code to ensure that the same behaviour is implemented to Guest Network Pro so it matches the main instance (I probably missed it when I did the initial SDN implementation).

 

[The_Bishop]

Ok, so more strange stuff.

If I add the command to the dnsmasq-4.conf file, and run the grep command, I get:

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq-4.conf:quiet-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

When I restart the service, the quiet-ra gets removed from the config file.

 

[RMerlin]

Ok, so more strange stuff.

If I add the command to the dnsmasq-4.conf file, and run the grep command, I get:

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq-4.conf:quiet-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

When I restart the service, the quiet-ra gets removed from the config file.

Re-read dave`s instructions. You must not directly edit the files, these are dynamically generated by the router.

 

[dave14305]

Ok, so more strange stuff.

If I add the command to the dnsmasq-4.conf file, and run the grep command, I get:

/etc/dnsmasq-4.conf:enable-ra
/etc/dnsmasq-4.conf:quiet-ra
/etc/dnsmasq.conf:enable-ra
/etc/dnsmasq.conf:quiet-ra

When I restart the service, the quiet-ra gets removed from the config file.

It has to be added to the /jffs/configs/dnsmasq-4.conf.add file as I showed in my earlier post.