## DELEGATION06: Existence of SOA

### Test case identifier

**DELEGATION06:** Existence of SOA

### Objective

Section 6.1 of the [RFC 2181](https://datatracker.ietf.org/doc/html/rfc2181) specifies
that the SOA record is mandatory for every zone. 

This test is intended to verify the presence of a SOA record for the
domain.

### Inputs

The domain name to be tested.

### Ordered description of steps to be taken to execute the test case

1. Obtain the complete set of name server address records from the parent using
   [Method4](../Methods.md) and the child using [Method5](../Methods.md).
2. All the uniquely obtained address records are queried for the SOA record.
3. If there is an answer with NOERROR and there is no content in the
   answer section, this test case fails.

### Outcome(s)

If there is a SOA record present for the domain this test case succeeds.

### Special procedural requirements

If either IPv4 or IPv6 transport is disabled, ignore the evaluation of the
result of any test using this transport protocol. Log a message reporting
on the ignored result.

### Intercase dependencies

None