I have a pretty new (2 weeks old) D-Link 2740B (ADSL Modem/Router). Everything was working fine until past Friday. Then, I couldn't access any website anymore. Pinging www.google.com and any other site failed. Pinging by IP adress however worked (at least for google.com) So I figured there was a DNS problem. Hence, I manually added my ISP's DNS servers in the properties dialog of my WiFi adapter (under TCP/IP). This seemed to help as I could connect to websites again.
The thing is, all of my devices had the same problem (iPhone, Notebook, Netbook...). Manually setting up the DNS IP in all my devices helped solve the problem.
Under the Status section of the router admin panel, everything seems fine. ADSL is connected. The DNS servers are recognized (the router admin panel shows the correct IP adresses for the DNS servers).
Even though I found a workaround: the day my ISP changes DNS servers, I'll have to change the IP's on every device. Hence, I would like this to stay the way it was i.e. optaining the IP automatically from the Router.
Has anyone got an idea how this could have happened. What is the problem here?