Because source and destination address of the client connection are now
updated at the appropriated level (connection, session or stream), original
info about the client connection are preserved. src/src_port/src_is_local
and dst/dst_port/dst_is_local return current info about the client
connection. It is the info at the highest available level. Most of time, the
stream. Any tcp/http rules may alter this info.
To get original info, "fc_" prefix must be added. For instance
"fc_src". Here, only "tcp-request connection" rules may alter source and
destination address/port.
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