UDP packet loss when cache enable

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http://unix.stackexchange.com – UDP packet loss when we enable the cache.Here i am using MCF5485 cold fire processor in that Access Control Registers(bits 5-6,CM) i.e,00 Cache able,write-through.01 Cache able,copy back.10 Cache-inhibited, precise.11 Cache inhibited,imprecise. when we set 00 or 01 mode(i.e Enable mode) in signal.h file we are getting packet loss. packet length is 1300 and No of packets are 30,000. (HowTos)