NAME

        CL_RFC2671_5_3_OPT_not_understand - Responders don't understand OPT RR


VERIFICATION POINTS

        Verify that a NUT retransmits query when responders don't understand OPT RR


TARGET

        Client


SYNOPSIS

	CL_RFC2671_5_3_OPT_not_understand.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 | | with OPT RR | | | |<---------------------------------------------| | 2. Send query response | | RCODE=4(Not Implemented) | | | |--------------------------------------------->| | 3. Send standard query | | without OPT RR | | | v v
1. NUT send standard query with OPT RR to TN. Judgment (Check *1) 2. TN send standard query response to NUT. 3. NUT send standard query to TN.*Send query automatically. Judgment (Check *3)


JUDGMENT

        1. Received standard query QNAME=A.example.com with OPT RR from NUT to Server1(TN).
        3. Received standard query QNAME=A.example.com without OPT RR from NUT to Server1(TN)


TERMINATION

        If NUT has cache function, clear the cache.


REFERENCE

	RFC2671 Extension Mechanisms for DNS (EDNS0)
	4 - OPT pseudo-RR