As the introduction explains, a root zone is one that contains the information that your DNS server needs to contain the Internet root servers. Without one, it is impossible to resolve records in domains other than those hosted by your server. Fortunately, one will almost always exist already in your BIND configuration, created either by Webmin or included as part of the default setup.
You may need to create a root zone if one does not exist yet because you selected the internal non-internet use only option when setting up the module for the first time, but have now connected your system to the Internet. Adding a second root zone can also be useful when views have been configured, as explained in Section 30.15 “Using BIND Views”.
Webmin will only allow you to create a root zone if none yet exists or if a view exists that does not contain one, because there is no point having two such zones. To add one, the steps to follow are:
Once a root zone has been added, an icon representing it will appear on the main page. You can delete it by clicking on the icon and hitting the Delete button; however, this may prevent the lookup of records in non-hosted Internet domains from working as explained above.
3.133.109.211