when I read the RFC1035, I noticed the opcode defination in the DNS message
head . It said that when opcode = 1 the message did Inverse query . but in the
packet I capatured when I used nslookup to do inverse query ,the inverse query
packet use the opcode = 0 and the question segment with RR TYPE PTR. Can
someone explain this ? Am I wrong about understanding the inverse query ?
Thank a lot .
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