Fix weird things with DNS in China. This is a port of ChinaDNS to C, especially for OpenWRT.
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Linux / Unix
[Download a release].
./configure && make src/chinadns -l iplist.txt -c chnroute.txt
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OpenWRT
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[Download precompiled] for OpenWRT trunk and CPU: ar71xx, brcm63xx, brcm47xx, ramips_24kec. Open an issue if you think your CPU is a popular one but not listed here.
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If you use other CPU or other OpenWRT versions, build yourself: cd into SDK root, then
pushd package git clone https://github.com/clowwindy/ChinaDNS-C.git popd make menuconfig # select Network/ChinaDNS make
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Tomoto
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Download Tomato toolchain, build by yourself.
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Uncompress the downloaded file to
~/
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Copy the
brcm
directory under~/WRT54GL-US_v4.30.11_11/tools/
to/opt
, thenexport PATH=/opt/brcm/hndtools-mipsel-uclibc/bin/:/opt/brcm/hndtools-mipsel-linux/bin/:$PATH git clone https://github.com/clowwindy/ChinaDNS-C.git cd ChinaDNS-C ./autogen.sh && ./configure --host=mipsel-linux --enable-static && make
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Windows
Download Python exe version.
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Linux / Unix
Run
sudo chinadns -l iplist.txt
on your local machine. ChinaDNS creates a UDP DNS Server at0.0.0.0:53
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OpenWRT
opkg install ChinaDNS-C_1.x.x_ar71xx.ipk /etc/init.d/chinadns start
Test if it works correctly:
$ dig @192.168.1.1 www.youtube.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
www.youtube.com canonical name = youtube-ui.l.google.com.
youtube-ui.l.google.com canonical name = youtube-ui-china.l.google.com.
Name: youtube-ui-china.l.google.com
Address: 173.194.72.102
Name: youtube-ui-china.l.google.com
Address: 173.194.72.101
Name: youtube-ui-china.l.google.com
Address: 173.194.72.113
Name: youtube-ui-china.l.google.com
Address: 173.194.72.100
Name: youtube-ui-china.l.google.com
Address: 173.194.72.139
Name: youtube-ui-china.l.google.com
Address: 173.194.72.138
Currently ChinaDNS-C only supports UDP. Builtin OpenWRT init script works with dnsmasq, which handles TCP. If you use it directly without dnsmasq, you need to add a redirect rule for TCP:
iptables -t nat -A PREROUTING -p tcp --dport 53 -j DNAT --to-destination 8.8.8.8:53
usage: chinadns [-h] [-l IPLIST_FILE] [-b BIND_ADDR] [-p BIND_PORT]
[-c CHNROUTE_FILE] [-s DNS] [-v]
Forward DNS requests.
-h, --help show this help message and exit
-l IPLIST_FILE path to ip blacklist file
-c CHNROUTE_FILE path to china route file
if not specified, CHNRoute will be turned off
-b BIND_ADDR address that listens, default: 127.0.0.1
-p BIND_PORT port that listens, default: 53
-s DNS DNS servers to use, default:
114.114.114.114,208.67.222.222:443,8.8.8.8
-v verbose logging
You can generate latest chnroute.txt using this command:
curl 'http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest' | grep ipv4 | grep CN | awk -F\| '{ printf("%s/%d\n", $4, 32-log($5)/log(2)) }' > chnroute.txt
MIT
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