I am trying to setup a second router to wirelessly connect to a primary router, and have that router provide wifi to all the devices wired to the secondary router, all witht the same subnet.
I think my ip addresses are correctly getting assiged by the primary router, as the devices wired to the secondary router receive the correct subnet. My devices are also able to ping each each other (192.168.8.x can ping 192.168.8.y), but only the devices directly connected to the primary router can connect to the internet. Shouldn't this be possible, and if so, can someone help me troubleshoot this issue?
It appears you are using firmware that is not from the official OpenWrt project.
When using forks/offshoots/vendor-specific builds that are "based on OpenWrt", there may be many differences compared to the official versions (hosted by OpenWrt.org). Some of these customizations may fundamentally change the way that OpenWrt works. You might need help from people with specific/specialized knowledge about the firmware you are using, so it is possible that advice you get here may not be useful.
Ask for help from the maintainer(s) or user community of the specific firmware that you are using.
Provide the source code for the firmware so that users on this forum can understand how your firmware works (OpenWrt forum users are volunteers, so somebody might look at the code if they have time and are interested in your issue).
If you believe that this specific issue is common to generic/official OpenWrt and/or the maintainers of your build have indicated as such, please feel free to clarify.
I was not aware that this was a custom fork, it seems like they have https://github.com/Seeed-Studio/seeed-linux-openwrt. Also, while following the tutorial for OpenWRT I didn't notice too many differences (I thought the UI changes were just due to the upload date of the video). It seems like this device is not officially supported, so I will ask the same question on their forums. However, can we try proceeding as if it was using normal OpenWrt firmware?
IMO, this could be a very bad idea because the methods used for official OpenWrt might end up causing issues or even bricking a device that is running a fork. We don't know what changes they made and how things should work in their builds. Further, the required packages may or may not be available in their repos.
I have posted on their forum (pending review). I am not very concerned with this device bricking; I have already reinstalled this firmware before, and if that doesn't work, we are going to go with a different device anyways.
I installed relayd and luci-proto-relay, following this tutorial:: https://www.youtube.com/watch?v=fl1TXlQakxg. My device only has one radio, so I can't really follow this tutorial directly; I will see how it goes anyways.
Edit: Well this works, minus the AP point portion b/c of the one radio. Don't really understand what I did wrong with the previous tutorial, but thanks for showing me the correct one.