My kernel always drop some packages

lordbyorn

My kernel always drop some packages, I am using SNAT by this command:iptables -t nat -A POSTROUTING  -s 192.168.1.0/28 -j SNAT --to 192.168.32.57
How to settle this ?

man page of tcpdump says that:
packets ``dropped by kernel'' (this is  the  number of  packets  that  were  dropped,  due to a lack of buffer space, by the packet  capture  mechanism  in the  OS  on  which  tcpdump  is  running, if the OS reports that information to applications;  if  not, it will be reported as 0).