CONFIG_IP_NF_MATCH_TOS
geoip match support
CONFIG_IP_NF_MATCH_GEOIP
  This option allows you to match a packet by its source or
  destination country.  Basically, you need a country's
  database containing all subnets and associated countries.

  For the complete procedure and understanding, read :
  http://people.netfilter.org/peejix/geoip/howto/geoip-HOWTO.html
  
  
  If you want to compile it as a module, say M here and read
  <file:Documentation/modules.txt>.  If unsure, say `N'.

