Device not found in Port Forwarding list (solved)

[_buffalobill_]

Hello. I experienced an issue today that I found several closed threads about , but I didn’t happen across the exact situation. I had. It’s possible I may have missed it, but wanted to share this information just in case.

I had switched most of my lan systems to static IP addresses some time ago and today was not seeing the desired device in the list of devices available for  port forwarding. What I found in my case, is that the device was in the IPv6 list, but not in the IPv4 list. After disabling IPv6 on the device (and generating traffic on that system), the device then showed in the IPv4 device list for port forwarding.

Is it expected that showing in the IPv6 list would prevent showing in the IPv4 list?

[ovidioj]

Hello @_buffalobill_,

Thanks for reaching out to the community! I understand your confusion about the device not showing up in the IPv4 list. No, normally, seeing a device in the IPv6 list shouldn't prevent it from appearing for port forwarding. Here are some possible reasons and troubleshooting steps:

Possible Reasons:

Router Configuration: Some routers might prioritize IPv6 over IPv4 for device discovery. Disabling IPv6 forced the router to rely solely on IPv4, making the device visible in that list.

Device Settings: In rare cases, some devices might have a setting that conflicts with displaying on both IPv4 and IPv6 lists simultaneously. Disabling IPv6 on the device itself might have resolved this conflict.

Troubleshooting Steps:

Here are some steps you can take to address the issue:

Check Router Settings:

• Consult your router's manual to see if there's an option to prioritize or disable IPv6 discovery. This might vary depending on the router model.

Review device settings:

• Look through your device's manual to see if there are any settings related to IPv4/IPv6 preference or visibility.

Test with re-enabled IPv6:

• Once you've explored the settings, try re-enabling IPv6 on both the router and the device. Ideally, the device should now show up in both IPv4 and IPv6 lists.

I hope the information above works for you. Please let me know if you have any other questions. 

All the best, 

Jorge. 

[_buffalobill_]

Just to add some detail if it comes up for anyone else, the only router at play is the Google WiFi router

Model: AC-1304


Software version: 14150.376.32

the device in question was an Ubuntu VM with no LAN access issues. It was listed in the devices portion of the app, but was not listed in the IPV4 devices to be able to port forward to.

I got things working the way I wanted by disabling IPV6 on the Ubuntu VM, just not clear why it was necessary. 
If this doesn’t sound like expected behavior and/or cannot be replicated, this thread may be closed as far as I am concerned.