header - modifies the header for responses.
header ensures that the flags are in the desired state for responses. The
modifications are made transparently for the client.
- ACTION defines the state for DNS message header flags. Actions are
evaluated in the order they are defined so last one has the most
precedence. Allowed values are:
- FLAGS are the DNS header flags that will be modified. Current
supported flags include:
Make sure recursive available ra flag is set in all the responses:
- aa - Authoritative(Answer)
- ra - RecursionAvailable
- rd - RecursionDesired
Make sure "recursion available" ra and
"authoritative answer" aa flags are set and "recursion
desired" is cleared in all responses:
set ra aa