NAME

        SV_RFC1034_4_3_2_23B46_2 - And QNAME is not found in the cache.

VERIFICATION POINTS

        Verify that whether NUT's following behavior.

        Recursion service is avairable but not requested via the RD bit in the query.
        Search the available zones for the zone which is the nearest ancestor to QNAME.
        Such a zone is found. A match take QNAME out of the authoritative data, QNAME 
        has a referral. Copy the NS RRs for the subzone into the authority section of
        the reply. Starting matching down in the cache. And QNAME is not found in the cache.

TARGET

        Server

SYNOPSIS

	SV_RFC1034_4_3_2_23B46_2.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

Net-y   -----------+-------------------------------------------------------------------- 3ffe:501:ffff:101::/64
                   |                                                                     192.168.1/24
                   |
                   |
                   |                         sub.example.com zone
                 Router (TN)             DNS Server6 (TN)
                   |3ffe:501:ffff:100::1     |NS6.sub.example.com
                   |192.168.0.1              |3ffe:501:ffff:100::30
                   |                         |192.168.0.30
                   |                         |
Net-z   --+--------+-----------------+-------+--- 3ffe:501:ffff:100::/64
          |                          |          192.168.0/24
          |                          |
        DNS Server1 (NUT)          DNS Client1 (TN)
           3ffe:501:ffff:100::XXXX    3ffe:501:ffff:100::20 
           192.168.0.10               192.168.0.20
	

	XXXX: EUI64

Setup

Set the DNS Server1's (NUT) address as above mentioned Network Topology.

Configure the Server1's (NUT) zone file to response query from TN.

Enable recursive mode.

Example of root server list:

For IPv4:

.                       3600000         IN      NS      A.ROOT.NET.
A.ROOT.NET.             3600000                 A       192.168.1.20

For IPv6:

.                       3600000         IN      NS      A.ROOT.NET.
A.ROOT.NET.             3600000                 AAAA    3ffe:501:ffff:101::20

Example of example.com zone file:

$TTL    86400           ; TTL of 1 day
@ IN SOA NS1.example.com. root.example.com. (
	2005081600	; serial
	3600		; refresh every 1 hr
	900		; retry every 15 min
	604800		; expire after a week
	3600		; Minimum TTL of a 1 hr
)
;
	IN	NS	NS1.example.com.
NS1	IN	A	192.168.0.10
;
sub	IN	NS	NS6.sub.example.com.
NS6.sub	IN	A	192.168.0.30
	IN	AAAA	3ffe:501:ffff:100::30
;

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (TN)             DNS Server1 (NUT)
        |                              |
        |----------------------------->|
        | 1. Send standard query       |
        |  RD = 0                      |
        |  QNAME = A.sub.example.com   |
        |  QTYPE = A                   |
        |                              |
        |<-----------------------------|
        | 2. Standard query response   |
        |  AA = 0                      |
        |  RD = 0                      |
        |  RA = 1                      |
        |  QNAME = A.sub.example.com   |
        |  QTYPE = A                   |
        |  AUTHORITY Name              |
        |        = sub.example.com     |
        |  AUTHORITY Type              |
        |        = NS (0x0002)         |
        |  AUTHORITY Name Server       |
        |        = NS6.sub.example.com |
        |  ADDITIONAL Name             |
        |        = NS6.sub.example.com |
        |  ADDITIONAL Type             |
        |        = A (0x0001)          |
        |  ADDITIONAL Address          |
        |        = 192.168.0.30        |
        |  ADDITIONAL Name             |
        |        = NS6.sub.example.com |
        |  ADDITIONAL Type             |
        |        = AAAA (0x001C)       |
        |  ADDITIONAL Address          |
        |      = 3ffe:501:ffff:101::30 |
        |                              |
        v                              v

        This test sequence is following.

        1. DNS Client1 (TN) send standard query QNAME=A.sub.example.com, QTYPE=A to NUT.
        2. DNS Server1 (NUT) transmits error response which include NS RRs in authority section and 
           all glue record of NS RRs in additional section. (Judgment *2)

Packet Description

1st packet.

Standard query from DNS Client1 (TN) to Server1 (NUT)
IP Header	Source Address	CL1_NETZ
IP Header	Destination Address	NUT_NETZ
UDP Header	Src Port	1000
UDP Header	Dst Port	53
DNS Header	ID	0x1000
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	1
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	A.sub.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)

2nd packet.

Standard query response from DNS Server1 (NUT) to Client1 (TN)
IP Header	Source Address	NUT_NETZ
IP Header	Destination Address	CL1_NETZ
UDP Header	Src Port	53
UDP Header	Dst Port	1000
DNS Header	ID	0x1000
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	1
	Z	ANY
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	1
	ARCOUNT	2
DNS Question section	QNAME	A.sub.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)
*DNS Authority section*	NAME	sub.example.com (Pointer 0xC00D)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	6
	NSDNAME	NS6.sub.example.com (NS6 + Pointer 0xC00D)
*DNS Additional section*	NAME	NS6.sub.example.com (Pointer 0xC02F)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.0.30
*DNS Additional section*	NAME	NS6.sub.example.com (Pointer 0xC02F)
	TYPE	AAAA (0x001C)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	ADDRESS	3ffe:501:ffff:100::30

Exp.

NUT_NETZ	DNS Server1's (NUT) Net-z address
CL1_NETZ	DNS Client1's (TN) Net-z address

JUDGMENT

        2. Received standard query response which include the NSs RRs in authority section and
           glue RRs in additional Section.

TERMINATION

        None

REFERENCE

        RFC1034 DOMAIN NAMES - CONCEPTS AND FACILITIES
        4. NAME SERVERS
        4.3.2. Algorithm