When I checked Ifconfig there were many alias interfaces present on host, That is the reason the host sending traffic to loopback device.
for each vm this alias interface were preset , So I just Ifdown those interdfaces and the issue got solved .
eth0:23859
eth0:23860
eth0:23861
eth0:23862
eth0:23863
eth0:23864
eth0:23865
eth0:23866
eth0:23907
eth0:23908
eth0:23909
eth0:23910
eth0:23911
above are the interfaces which I found on the host