Troubleshooting • Re: Raspberry Pi 5 + Google WiFi: Sounds like a NAT issue, but doesn't seem so

Eventually, however, I would end up in a situation where not only was I not able to ssh to RPi5 by doing so from outside of the LAN, I had the problem of not being able to ssh to RPi5 (receiving a "connection refused" error) even for attempts within the lan; like:

Code:

ssh MightyMouse314@192.168.86.91

When you are unable to ssh into the Pi5, can you ping it? If not, then from the Pi3 can you install nmap and then `sudo nmap -sP 192.168.86.0/24` and find where your Pi5 IS actually on your network? If it's not where it should be (.91), then we need to figure out what IP address it does have, and how it got it.

I tried pinging RPi5 and if I remember correctly, i could actually ping it. The other address that I wanted to give it to it (and have succeeded a few times) was the .30. Clearly, I tried to login into both. Furthermore, I can see from the Google Home App which IP address each device has (a bit painful, but doable).

What is the DHCP server on your network? Is it one of the Google devices or your AT&T device? I'm still concerned and confused about this.

Yes, it is one of the Google WiFi devices. I think the approach is the same as the second option mentioned by JefferMC here:
https://forums.att.com/conversations/at ... 382dcef0fe

re Google WiFi: I'm very familiar with mesh networks. I have an eero network, set in bridge mode. This means that the eero devices bridge the wifi network onto the wired network, and my DHCP server is a Pi on the wired network. Are one (or more Image may be NSFW.
Clik here to view. ) of your google devices actually doing routing/DHCPserver/port forwarding, or is that on the AT&T router? Please clarify...this still sounds fishy to me.

All the routing happens through the Google WiFi devices. I have enabled IP passthrough from the AT&T router to one Google device and that one device is responsible for everything pretty much. I have disabled WiFi on the AT&T router. The network addresses are different. I think AT&T router sits at 192.168.1.254 (but I need to check when I will be at home). Google WiFi devices give IPs between 192.168.86.20 (or .30) and up to 192.168.86.250. The Google WiFi device that does the routing sits at 192.168.86.1. From the Google Home App I can see that its WAN address is the IP that is assigned to my house (the one that I use to login from outside).

Statistics: Posted by MightyMouse314 — Fri Mar 15, 2024 7:44 pm

---