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Hello,

We have connection problems a few times following a change of IP address of the ISP.

Every 6 hours, our ISP change IP public adress.

The protocole ICMP is OK but the protocoles TCP and UDP is not OK.

During the problem, the ping to destination 8.8.8.8 works but the commandes lines wget and curl isn't works.

After restart /etc/init.d/firewall, my IP public has changed and it worked whereas the 6 hours had not passed.

Firmware : RUT2_R_00.07.02.7

Thanks.

Best Regards,

1 Answer

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Hello,

Could you provide more detailed description of the issue?

Are you getting data disconnects and the router is not able to reconnect?

Is the firewall restart mandatory after IP change to restore the connection?

Best regards,
by
Hello,

On the web, the connexion mobile is OK.

On the SSH, the ping is OK on 8.8.8.8.

PING 8.8.8.8 (8.8.8.8): 56 data bytes

64 bytes from 8.8.8.8: seq=0 ttl=119 time=55.031 ms

64 bytes from 8.8.8.8: seq=1 ttl=119 time=48.030 ms

64 bytes from 8.8.8.8: seq=2 ttl=119 time=45.571 ms

64 bytes from 8.8.8.8: seq=3 ttl=119 time=47.019 ms

64 bytes from 8.8.8.8: seq=4 ttl=119 time=44.971 ms

64 bytes from 8.8.8.8: seq=5 ttl=119 time=44.232 ms

On the SSH, curl ou wget isn't OK :

root@XXXXXX: wget http://www.mon-ip.com/

Downloading 'http://www.mon-ip.com/'

Failed to send request: Operation not permitted

After the command /etc/init.d/firewall/restart, the command curl and wget is OK and the connection is OK.

After the restart firewall, My IP private for ISP has changed as well as IP public ISP.

This problem is random and rare (once every 10 days).

Reboot the router also fixes the problem.

Thanks.

Best Regards,
by

You could configure automatic modem reboot on failed wget reboots. This would restart the modem together reloading the firewall, withour the need to restar the router completely.

The configuration can be found in Services -> Auto reboot -> Ping/wget reboot section.

Check this wiki page on Auto reboot.

by
Hello,

We have a script to execute in crontab for restart only firewall to go faster.

This solution is not good in the long run.

Can you fix it for the next firmware ?

Thanks
by

I would need a troubleshoot file from the device with the issue present to forward it to the development team for the possible cause and, maybe come up with the solution. Otherwise, it is not possible to tell what exactly needs to be fixed.

To generate a troubleshoot file, access router's WebUI, go to System -> Administration -> Troubleshoot section and download the file from there.

by
Hello,

The problem happened again last night 11/08/2022 21h08 CET 11/09/2022 03h08 CET.

I send the troubleshoot in private message.

Best Regards,