Device getting weird IP address (yafisdamda)

Hi.I am working on a product running Microchip TCP/IP stack. It has a PIC18F67J60 and compiler used is C18.This is my stack configuration:#define STACK_USE_UART
#define STACK_USE_ICMP_SERVER
#define STACK_USE_DHCP_CLIENT
#define STACK_USE_D..