Hey everyone,
I have a really weird issue and haven't been able to find a solution. I flashed OpenWRT on my Cudy WR1300 to make it work as a wifi bridge and I followed the https://openwrt.org/docs/guide-user/network/wifi/relay_configuration#networking_details guide to configure relayd and everything works fine. However, I have a problem that I am unable to solve myself.I have a Talos Linux Kubernetes cluster at home on 3 Raspberry Pi 4B devices, and before setting this up, I had the static IPs for each node on my ISP router, and I had no issues. Talos Linux supports ethernet connections only, so this is a must for me. A static IP is required as well for my nodes, especially my control plane node, as it's the central point for the Talos and Kubernetes API.
Anyway, after testing and trying stuff out, I am still unable to figure out why, even when the DHCP server is disabled on the bridge, I am unable to get the static IPs on my nodes via ethernet. I tested the WiFi and my other devices are getting the static IP instantly, and I also tested other devices on my network via ethernet with static IPs and they work just fine.
After doing a tcpdump on the wifi bridge, I noticed that he Raspberry Pi nodes always request the static IP from the DHCP server, and then, almost instantly,, they do a request again and they get a random IP assigned. It's worth mentioning that I also tested by inserting a Raspberry Pi OS card into one of the devices, and weirdly, it got the static IP I wanted, so I am looking for ways to debug this behavior. Here is the tcpdump I mentioned: https://pastebin.com/U1EGZChK, and as you can see, 192.168.0.241 is the static IP I want, but it's getting replaced.
Does anyone have any ideas on what is going on? Let me know if you need more information, I really need help with this. Thanks in advance!