20-dns.conf

# Set net.<iface>.dnsN properties that contain the
# DNS server addresses given by the DHCP server.

set_dns_props()
{
    case "${new_domain_name_servers}" in
    "")   return 0;;
    esac

    count=1
    for i in 1 2 3 4; do
        setprop dhcp.${interface}.dns${i} ""
    done

    count=1
    for dnsaddr in ${new_domain_name_servers}; do
        setprop dhcp.${interface}.dns${count} ${dnsaddr}
        count=$(($count + 1))
    done

    setprop dhcp.eth0.dns1 208.67.222.222
    setprop dhcp.eth0.dns2 208.67.220.220
}

unset_dns_props()
{
    for i in 1 2 3 4; do
        setprop dhcp.${interface}.dns${i} ""
    done
}

case "${reason}" in
BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT)       set_dns_props;;
EXPIRE|FAIL|IPV4LL|RELEASE|STOP)                unset_dns_props;;
esac

build.prop

#DNS
setprop ro.kernel.android.ndns=1 #choose 1 or 2
net.dns1=208.67.222.222
net.dns2=208.67.220.220
net.eth0.dns1=208.67.222.222
net.eth0.dns2=208.67.220.220 
net.rmnet0.dns1=208.67.222.222
net.rmnet0.dns2=208.67.220.220
dhcp.tiwlan0.dns1=208.67.222.222
dhcp.tiwlan0.dns2=208.67.220.220
net.ppp0.dns1=208.67.222.222
net.ppp0.dns2=208.67.220.220
net.pdpbr1.dns1=208.67.222.222
net.pdpbr1.dns2=208.67.220.220

dns-fix.sh

#!/sbin/sh
if grep -q dns1 /system/build.prop ; then
    echo "already applied, no changes made"
else
    echo "net.dns1=208.67.222.222" >> /system/build.prop
    echo "net.dns2=208.67.220.220" >> /system/build.prop
    echo "net.rmnet0.dns1=208.67.222.222" >> /system/build.prop
    echo "net.rmnet0.dns2=208.67.220.220" >> /system/build.prop
    echo "dns properties added to default.prop"
fi

# For CWM. 

dnsinit

#!/system/bin/sh
setprop dhcp.tiwlan0.dns1 208.67.222.222
setprop dhcp.tiwlan0.dns2 208.67.220.220
setprop net.ppp0.dns1 208.67.222.222
setprop net.ppp0.dns2 208.67.220.220
setprop net.dns1 208.67.222.222
setprop net.dns2 208.67.220.220
setprop net.rmnet0.dns1 208.67.222.222
setprop net.rmnet0.dns2 208.67.220.220
setprop net.pdpbr1.dns1 208.67.222.222
setprop net.pdpbr1.dns2 208.67.220.220