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readme: UDP stream notes
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@@ -323,6 +323,9 @@ It can be fed with unidirectional or bidirectional packets.
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A SYN or SYN,ACK packet creates an entry in the conntrack table.
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First seen UDP packet creates UDP stream. It defines the stream direction. Then all packets with the same
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src_ip,src_port,dst_ip,dst_port are considered to belong to the same UDP stream. UDP stream exists till timeout.
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That's why iptables redirection must start with the first packet although can be cut later using connbytes filter.
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A connection is deleted from the table as soon as it's no more required to satisfy nfqws needs or when a timeout happens.
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