NAME

        SV_RFC1035_3_1_label_root - Label of root

VERIFICATION POINTS

        Verify that a NUT transmits correct standard query for label of root

• Since every domain name ends with the null label of the root, a domain name is terminated by a length byte of zero.

TARGET

        Caching Server

SYNOPSIS

	SV_RFC1035_3_1_label_root.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

                                 . domain
        AP Server1 (TN)          DNS Server2
          |A.example.org           |A.ROOT.NET
          |3ffe:501:ffff:101::10   |3ffe:501:ffff:101::20 
          |192.168.1.10            |192.168.1.20
          |                        |
Net-y   --+--------+---------------+---------- 3ffe:501:ffff:101::/64
                   |                            192.168.1/24
                   |
                   |
                 Router (TN)
                   |3ffe:501:ffff:100::1
                   |192.168.0.1
                   |
                   |
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.


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
;
	

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (TN)             DNS Server1 (NUT)                  DNS Server2 (TN)
        |                              |                                 |
        |----------------------------->|                                 |
        | 1. Send standard query       |                                 |
        |  QNAME=A.example.org         |                                 |
        |  QTYPE=A                     |                                 |
        |                              |                                 |
        |                              |-------------------------------->|
        |                              | 2. Recv standard query          |
        |                              |  QNAME=A.example.org            |
        |                              |  QTYPE=A                        |
        |                              |                                 |
        v                              v                                 v

        1. TN send standard query QNAME=A.example.org, QTYPE=A to NUT.
        2. NUT transmits standard query to DNS Server2 (TN: root name server) (Judgment *2)

Packet Description



1st packet.

Standard query from DNS Client1 (TN) to Server1 (NUT)
IP Header	Source Address	CL1_NETZ
	Destination Address	NUT_NETZ
UDP Header	Src Port	2000
	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.example.org
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)



2nd packet.

Standard query from DNS Server1 (NUT) to Server2 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV2_NETY
UDP Header	Src Port	any
	Dst Port	53
DNS Header	ID	any
	QR	0
	OPCODE	0
	AA	any
	TC	0
	RD	0
	RA	any
	Z	any
	RCODE	any
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	any
DNS Question section	QNAME	A.example.org
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)




Exp.


NUT_NETZ	DNS Server1's (NUT) Net-z address
CL1_NETZ	DNS Client1's (TN) Net-z address
SV2_NETY	DNS Server2's (TN) Net-y address
SV3_NETY	DNS Server3's (TN) Net-y address
SV4_NETY	DNS Server4's (TN) Net-y address

JUDGMENT

        2. Standard query must be based on above Verification Points.
          *In DNS Question section, QNAME field must include following data.

        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        | 0  0  0  0  0  0  0  1|           a           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        | 0  0  0  0  0  1  1  1|           e           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        |           x           |           a           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        |           m           |           p           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        |           l           |           e           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        | 0  0  0  0  0  0  1  1|           o           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        |           r           |           g           |
        +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
        | 0  0  0  0  0  0  0  0|                       
        +--+--+--+--+--+--+--+--+

TERMINATION

        None

REFERENCE

        RFC1035 DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
        3.1. Name space definitions