Message Format
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DNS queries and responses are carried in a standard message format. The
message format has a header containing a number of fixed fields which
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... DNS queries and responses are carried in a standard message format. The
message format has a header containing a number of fixed fields which
are always present, and four sections which carry query ...
... queries.
Both the query and its response are carried in a standard message format
which is described in [RFC-1035std13]. The query ...