NAME

        SV_RFC3403_4_1_invalid_NAPTR_format - Invalid NAPTR resource record format

VERIFICATION POINTS

        Verify that a NUT transmits an error for invalid NAPTR resource record format.

NAPTR RDATA field

REPLACEMENT :

A <domain-name> which is the next domain-name to query for depending on the potential values found in the flags field. This field is used when the regular expression is a simple replacement operation. Any value in this field MUST be a fully qualified domain-name. Name compression is not to be used for this field. This field and the REGEXP field together make up the Substitution Expression in the DDDS Algorithm. It is simply a historical optimization specifically for DNS compression that this field exists. The fields are also mutually exclusive. If a record is returned that has values for both fields then it is considered to be in error and SHOULD be either ignored or an error returned.

TARGET

        Authoritative Server

SYNOPSIS

	SV_RFC3403_4_1_invalid_NAPTR_format.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

        AP Server1 (TN)
          |3ffe:501:ffff:101::10
          |192.168.1.10
          |
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 
           3ffe:501:ffff:100::10
           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 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
;
A	IN	A	192.168.1.10
	

Example of 1.1.1.1.0.9.1.8.e164.arpa. domain zone file:


$TTL	86400		; TTL of 1 day
@ IN SOA NS1.example.com. root.example.com. (
	2005081600	; serial
	3600		; refresh after 1 hr
	900		; retry after 15 min
	604800		; expire after 1 week
	3600		; Minimum TTL of 1 hr
)
;
	IN	NS	NS1.example.com.
;
1.0.0.0	IN	NAPTR	100	10	"u"	"sip+E2U"	"!^.*$!sip:info1@example.com!i"	A.example.com.
	

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (TN)                       DNS Server1 (NUT)
        |                                      |
        |------------------------------------->|
        |   1. Send standard query             |
        |      QNAME = 1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.
        |      QTYPE= NAPTR                    |
        |                                      |
        |<-------------------------------------|
        |   2. Standard query response         |
        |      RCODE=2 (Server failure)        |
        |                                      |
        |                                      |
        v                                      v

        1. TN send standard query
           QNAME=1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.,
           QTYPE=NAPTR to NUT.
        2. NUT reply query response w/ RCODE=2 (Server failure) to TN (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	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.
	QTYPE	NAPTR (0x0023)
	QCLASS	IN (0x0001)



2nd packet.

Standard query response from DNS Server1 (NUT) to Client (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	CL1_NETZ
UDP Header	Src Port	53
	Dst Port	2000
DNS Header	ID	0x1000
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	ANY
	RCODE	2
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa
	QTYPE	NAPTR (0x0023)
	QCLASS	IN (0x0001)




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 including RCODE=2.

TERMINATION

        None

REFERENCE

        RFC3403 Dynamic Delegation Discovery System (DDDS)
                Part Three: The Domain Name System (DNS) Database
        4. NAPTR RR Format 
        4.1 Packet Format