[EdLUG] Network problem

[Dick Middleton]

On 2/13/21 12:03 PM, Andrew Kember wrote:
> On Sat, 13 Feb 2021 at 11:47, Dick Middleton <dick at lingbrae.com 
> <mailto:dick at lingbrae.com>> wrote:
> 
>     I've got a really weird problem with my network and I'm at a loss as to what to do.

> 
> One cause that covers some but not all of your problem statement would be a device in your 
> house on your network advertising itself as the default gateway. Different device types 
> might pick up that info at different times or rates, causing the kind of issues you're 
> seeing.
> 
> One example of this that happened to me is a new smart, network-connected LED controller 
> that we bought. The setup routine was ... extremely janky.
> 
> The way it was supposed to work was that it initially created its own wireless AP. You 
> connect your phone to that (this is when it should be advertising itself as the default 
> route) and give it details of your WiFi ssid and password.
> 
> It's then supposed to connect to your normal WiFi, turn off its own AP function and - 
> crucially - stop telling everything in range that it's the default gateway for the 
> internet.  That last bit didn't happen.
> 
> As a result, devices in the house just mysteriously stopped connecting to the internet.
> 
> It's a long shot, but I thought I'd share my experience. Hope you find the cause!
> 
> Andrew Kember.

They connect OK it's just they don't download.  I don't think we've changed/added anything 
over the past few days.  But the idea of a duplicate IP address is worth thinking about.

Dick