bind9 failed to start : resolvconf: Error: /etc/resolv.conf must be a symlink

解法如下：

#cd /etc/resolvconf/
mkdir run
sudo mv ../resolv.conf ./run/
sudo ln -s /etc/resolvconf/run/resolv.conf /etc/resolv.conf
cd /etc/resolvconf/run/
mkdir interface
/etc/init.d/bind9 restart

Okay, let's all.