Grab APNIC

This grabs the zipped version of routes from the previous day, which only results in 250kb download (because it is soooo slow). Put this in a crontab to run nightly...

#!/bin/ash

## Yesterday...
year=`env TZ=UTC+24 date +%Y`
day=`env TZ=UTC+24 date +%Y%m%d`

url=ftp://ftp.apnic.net/apnic/stats/apnic/$year/delegated-apnic-$day.gz

## Backup (needed?)
gzip -f /etc/chinadns_chnroute.txt

wget -O- $url | gunzip | awk -F\| '/CN\|ipv4/ { printf("%s/%d\n", $4, 32-log($5)/log(2)) }' > /etc/chinadns_chnroute.txt