On Tue, Jun 14, 2011 at 08:41:50PM -0800, Jeff Peng <pengyh at inbox.com> wrote a message of 18 lines which said: > I changed ns[1-2].myzone.com to new IPs in myzone.com's DNS, then > how to let BIND for example.com to know the NS has been changed? Wait for the TTL to expire seems the most reasonable course of action.