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6.2.2. QNAME=SRI-NIC.ARPA, QTYPE=* Connected: An Internet Encyclopedia
6.2.2. QNAME=SRI-NIC.ARPA, QTYPE=*

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Next: 6.2.3. QNAME=SRI-NIC.ARPA, QTYPE=MX

6.2.2. QNAME=SRI-NIC.ARPA, QTYPE=*

6.2.2. QNAME=SRI-NIC.ARPA, QTYPE=*

A query similar to the previous one, but using a QTYPE of *, would receive the following response from C.ISI.EDU:

               +---------------------------------------------------+
    Header     | OPCODE=SQUERY, RESPONSE, AA                       |
               +---------------------------------------------------+
    Question   | QNAME=SRI-NIC.ARPA., QCLASS=IN, QTYPE=*           |
               +---------------------------------------------------+
    Answer     | SRI-NIC.ARPA. 86400 IN  A     26.0.0.73           |
               |                         A     10.0.0.51           |
               |                         MX    0 SRI-NIC.ARPA.     |
               |                         HINFO DEC-2060 TOPS20     |
               +---------------------------------------------------+
    Authority  | <empty>                                           |
               +---------------------------------------------------+
    Additional | <empty>                                           |
               +---------------------------------------------------+

If a similar query was directed to two name servers which are not authoritative for SRI-NIC.ARPA, the responses might be:

               +---------------------------------------------------+
    Header     | OPCODE=SQUERY, RESPONSE                           |
               +---------------------------------------------------+
    Question   | QNAME=SRI-NIC.ARPA., QCLASS=IN, QTYPE=*           |
               +---------------------------------------------------+
    Answer     | SRI-NIC.ARPA. 12345 IN     A       26.0.0.73      |
               |                            A       10.0.0.51      |
               +---------------------------------------------------+
    Authority  | <empty>                                           |
               +---------------------------------------------------+
    Additional | <empty>                                           |
               +---------------------------------------------------+

and

               +---------------------------------------------------+
    Header     | OPCODE=SQUERY, RESPONSE                           |
               +---------------------------------------------------+
    Question   | QNAME=SRI-NIC.ARPA., QCLASS=IN, QTYPE=*           |
               +---------------------------------------------------+
    Answer     | SRI-NIC.ARPA. 1290 IN HINFO  DEC-2060 TOPS20      |
               +---------------------------------------------------+
    Authority  | <empty>                                           |
               +---------------------------------------------------+
    Additional | <empty>                                           |
               +---------------------------------------------------+

Neither of these answers have AA set, so neither response comes from authoritative data. The different contents and different TTLs suggest that the two servers cached data at different times, and that the first server cached the response to a QTYPE=A query and the second cached the response to a HINFO query.


Next: 6.2.3. QNAME=SRI-NIC.ARPA, QTYPE=MX

Connected: An Internet Encyclopedia
6.2.2. QNAME=SRI-NIC.ARPA, QTYPE=*

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