.. include:: /shared/substitution.rst

Troubleshooting 
================

This section will try to point out some things worth checking if something goes wrong. Some of the pointers are not strictly related to |bind|.

Data doesn't leave the machine
-------------------------------

After everything is setup and looks good there is no traffic leaving the machine still? This might be realted to a package filter so we make sure the
package filter is setup to let dns related traffic pass.

.. note:: the example is taken from the pf tool used on FreeBSD as package filter solution

.. code-block:: vim

    pass  quick on vtnet0 inet proto tcp  from any to vtnet0 port { 53 } flags S/SAFR keep state
    pass  quick on vtnet0 inet6 proto tcp  from any to  vtnet0 port { 53 } flags S/SAFR keep state
    pass  quick on vtnet0 inet proto udp  from any to vtnet0 port { 53 }  keep state
    pass  quick on vtnet0 inet6 proto udp  from any to  vtnet0  port { 53 }  keep state