With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL3dvmrpInterfaceLocalAddress
Switch L3dvmrp Interface Local Address
1.3.6.1.4.1.171.11.70.5.3.12.1.2
The IP address this system will use as a source address on this interface. On unnumbered interfaces, it must be the same value as dvmrpInterfaceLocalAddress for some interface on the system.
Back to SWL3MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL3dvmrpInterfaceLocalAddress on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link WiFi routers right now.