OpenWRT scripts for unblock domains. Tested with OpenWRT 15.05.1 (CHAOS CALMER)
Few steps
Install OpenVPN into OpenWRT device
opkg update
opkg install bind-host
From host mashine
scp unblocker.sh /etc/openvpn/unblocker.sh
In router
chmod +x unblocker.sh
Run in folder with scripts
echo TUN=`ifconfig | grep tun | awk '{print $1}'` > settings.conf
touch domains.conf
Add list of domains into domains.conf
./unblocker.sh
You can add you own DNS server - just add it into dns.conf
.