DELEGATION02: Name servers must have distinct IP addresses

Test case identifier

DELEGATION02: Name servers must have distinct IP addresses

Objective

If the domain's name servers use several different names, they can all be using the same IP address. This may be due to a configuration error, or a workaround for a certain policy restriction. This test case checks that the name servers used do not reuse the same IP addresses.

Section 4.1 of RFC 1034 says at least two name servers must be used for a delegation.

Inputs

"Child Zone" - 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 names in the delegation of the Child Zone using Method2 and the IP addresses for each name using Method4.

2. If the same IP address is found for two or more name server names, emit DEL_NS_SAME_IP for each repeated address, else emit DEL_DISTINCT_NS_IP.

3. Obtain the complete set of name server names from the Child Zone using Method3 and the IP addresses for each name using Method5.

4. If the same IP address is found for two or more name server names, emit CHILD_NS_SAME_IP for each repeated address, else emit CHILD_DISTINCT_NS_IP.

Outcome(s)

The outcome of this Test Case is "fail" if there is at least one message with the severity level ERROR or CRITICAL.

The outcome of this Test Case is "warning" if there is at least one message with the severity level WARNING, but no message with severity level ERROR or CRITICAL.

In other cases the outcome of this Test Case is "pass".

Special procedural requirements

None

Intercase dependencies

None