Help tracking down frequent ip address changes?

Technical Support for Routers
1

Hardware: GL.iNet GL-MT6000
Firmware: 4.6.4-op24
Kernel: 6.6.47

I can't understand why my IP address is flip flopping. I use a ddns-updater app on unraid server to update DDNS on deSEC. This works great but in checking the logs I'm seeing a massive number of ip updates per day.

Here's a sample of today so far.

{
          "ip": "184.189.5.154",
          "time": "2024-10-14T00:04:09.640579972-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T00:14:09.646551572-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T01:14:09.478221769-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T01:24:09.487997917-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T02:24:09.452826331-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T02:34:09.343903938-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T03:34:09.665091888-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T03:44:09.443466948-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T04:44:09.500945023-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T04:54:09.366675149-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T05:54:09.535262916-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T06:04:09.351171373-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T07:04:09.587526414-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T07:14:09.306101764-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T08:14:09.668396608-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T08:24:09.533241321-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T09:24:09.780271275-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T09:34:09.610036298-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T10:34:09.637162753-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T10:44:09.336355254-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T11:44:09.626557944-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T11:54:09.349764023-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T12:54:09.677965436-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T13:04:09.66105382-07:00"
        },
        {
          "ip": "184.189.5.154",
          "time": "2024-10-14T14:04:09.686986099-07:00"
        },
        {
          "ip": "97.120.162.127",
          "time": "2024-10-14T14:14:09.474186339-07:00"
        }
}

It keeps flipping back and forth. This used to generally only happen when I would reboot my router.
I'm not 100% sure the routher isn't rebooting this often.

How can I go about effectively troubleshooting this? Thanks.

2

Do you use multi WAN?

3

Update...
I use a smartDNS service and had its DNS Server address set up as my network's dns server.
For some reason this was causing the issue described above. After setting the dns server back to default, as a test, the problem stopped.

I'm still curious why this would happen but for now am happy to have found a solution.

1 Like