Some of our customer complaint they could not visit
back to their web site, which use chinese domain name.
I google the net and found some one recommend to use
public-root.com servers in hint file.
I found domain name like xn--8pru44h.xn--55qx5d could
not be resolved either.
Our cache server runs BIND9.3.1 with root server list
Do I need to modify our cache server configuration to