This small office customer recently changed to AT&T for their ISP. Looking at ipconfig, their PCs are all 192.168.5.x, but their gateway is 192.168.4.1. All the PCs get "automatic" IP addresses, and they all access the internet and their local network just fine.
The problem comes in when I need to set new addresses on their two wireless radios. We always set them up with static IPs. If I try to set up the static IP as 192.168.5.232, and the gateway as 192.168.4.1, I get an error saying both must be in the same subnet.
Trying to get fast, qualified help from AT&T while I'm here on site is going to be impossible, based on past experience. I'm hoping someone here at e-e knows what, if anything I can do to get the IP addresses and the gateway in the same subnet, or some other solution that will work. I am accustomed to seeing both in the subnet everywhere I go, so I'm lost as to why it is this way, and what to do about it. TIA