I have a D-Link DSL-2740B on eircom too. I know exactly the problem that you're having (seeing as I've encountered it before). From what I've seen the router at times (about once every month or 2) just randomly drops the connection settings.
In order to fix the problem you just have to re-enter the settings (DNS, username, password, etc...) and it is fine again. I highly doubt that the problem is eircom. It's more lightly to be the router. The reason why when you plug back in the netopia router it works is because it still has the settings.
I've also had a Belkin F5D7230-4 before and the same thing occurred.
Basically take note of the required settings and if it happens just re-enter the settings. If the problem is really annoying you contact D-Link (eircom technically don't have to support you anyway because you're no longer using one of their routers) |