I am using a Windows Server 2012 R2 as Domain Controller, DHCP Server, DNS in my network. My Router is the gateway which is connected to the DSL modem.
Some Clients (all android devices) and the amazon kindle (which i think is android based as well) do not have internet access with DHCP enabled. Windows Clients, a MAC Mini, iPad and IPhone don't have any problems to access the internet, all with dhcp enabled.
If i set a static ip on the failing devices with all options manually (gateway and dns) everything is fine. So it seems to be definitly a problem of DHCP.
In DHCP options i have the following settings
Router Option 3 with the gateway address
DNS Server Option 6
DNS-Domain-Name Option 15
The following network setup
Windows Server: 10.0.1.2 Gateway: 10.0.1.1 (connected as 10.0.0.x to the modem) Modem: 10.0.0.138 Clients: 10.0.1.100-200 = DHCP range DHCP on Gateway router is deactivated.
NetScan shows only one dhcp server responding with the correct Gateway and DNS settings.
I can't find out whats wrong, i don't believe its a general Android problem with windows server.
Does anyone have any ideas or suggestions to solve the problem?
The failing devices seem to get a valid IP from DHCP, it seems not to be a DNS Problem, i think the gateway is not found correctly.