192.168.0.251 is a default IP the M1XEP will revert to if it can’t get an IP from the router or if it is set to a Static IP. Using the JP2 Jumper and the Instructions on page 18 of the M1XEP Installation Manual will place the M1XEP into DHCP Mode so it will receive an IP from the router. Once it receives a IP Address compatible with you LAN use ElkRP2 version 2.0.40 to Find and Connect. If the M1XEP is not running Firmware 2.0.48 I would suggest updating .