NAME

        CL_RFC2181_8_sign_bit - Received with most significant bit is set


VERIFICATION POINTS

        Verify that a NUT treats TTL value with most significant bit is set as zero


TARGET

        Client (with Caching function)


SYNOPSIS

	CL_RFC2181_8_sign_bit.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm


INITIALIZATION


TEST PROCEDURE

        This test sequence is following.
    DNS Client1 (NUT)                        DNS Server1 (TN)
        |                                              |
        |--------------------------------------------->|
        |           1. Send standard query             |
        |              QNAME=A.example.com             |
        |                                              |
        |<---------------------------------------------|
        |           2. Standard query response         |
        |         TTL with most significant bit is set |
        |                                              |
        |--------------------------------------------->|
        |           3. Send standard query             |
        |              QNAME=A.example.com             |
        |                                              |
        v                                              v
        1. NUT send standard query to TN.
                  Judgment (Check *1)
        2. TN send standard query response to NUT.
        3. NUT send standard query to TN.
                  Judgment (Check *3)


JUDGMENT

        1. Received standard query QNAME=A.example.com from NUT.
        3. Received standard query QNAME=A.example.com from NUT.


TERMINATION

        If NUT has cache function, clear the cache.


REFERENCE

	RFC2181 Clarifications to the DNS Specification
	8. Time to Live(TTL)