鉴于高总的IPIP.net的数据库的准确性，推荐使用下列源：
https://github.com/17mon/china_ip_list/blob/master/china_ip_list.txt
wget -O- 'http://202.12.29.205/apnic/stats/apnic/delegated-apnic-latest' | awk -F\| '/CN\|ipv4/ { printf("%s/%d\n", $4, 32-log($5
)/log(2)) }' > /etc/chinadns_chnroute.txt
或者
wget -O- 'http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest' | awk -F\| '/CN\|ipv4/ { printf("%s/%d\n", $4, 32-log($5
)/log(2)) }' > /etc/chinadns_chnroute.txt