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/freebsd-11.0-release/sys/netinet/libalias/
H A Dalias.cdiff 51107 Thu Sep 09 13:42:51 MDT 1999 ru Handle TCP reset sequence properly.

In the words of originator:
:If an incoming connection is initiated through natd and deny_incoming is
:not set, then a new alias_link structure is created to handle the link.
:If there is nothing listening for the incoming connection, then the kernel
:responds with a RST for the connection. However, this is not processed
:correctly in libalias/alias.c:TcpMonitor{In,Out} and
:libalias/alias_db.c:SetState{In,Out} as it thinks a connection
:has been established and therefore applies a timeout of 86400 seconds
:to the link.
:
:If many of these half-connections are initiated (during, for example, a
:port scan of the host), then many thousands of unnecessary links are
:created and the resident size of natd balloons to 20MB or more.

PR: 13639
Reviewed by: brian
/freebsd-11.0-release/sys/dev/pty/
H A Dpty.cdiff 13639 Fri Jan 26 12:42:39 MST 1996 phk Fix a bug I made in the devfs.

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