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+Version 1.0: August 11, 1996 (cjm)
+
+Version 1.1:  August 20, 1996  (cjm)
+    - Host accepts incoming connections for ports 0 to 1023.
+
+Version 1.2:  September 7, 1996 (cjm)
+    - Fragment handling error in alias_db.c corrected.
+
+Version 1.3:  September 15, 1996 (cjm)
+    - Generalized mechanism for handling incoming
+      connections (no more 0 to 1023 restriction).
+
+    - Increased ICMP support (will handle traceroute now).
+
+    - Improved TCP close connection logic.
+
+Version 1.4: September 16, 1996 (cjm)
+
+Version 1.5: September 17, 1996 (cjm)
+    - Corrected error in handling incoming UDP packets
+      with zero checksum.
+
+Version 1.6: September 18, 1996
+    - Simplified ICMP data storage.  Will now handle
+      tracert from Win95 and NT as well as FreeBSD
+      traceroute, which uses UDP packets to non-existent
+      ports.
+
+Verstion 1.7: January 9, 1997 (cjm)
+    - Reduced malloc() activity for ICMP echo and
+      timestamp requests.
+
+    - Added handling for out-of-order IP fragments.
+
+    - Switched to differential checksum computation
+      for IP headers (TCP, UDP and ICMP checksums
+      were already differential).
+
+    - Accepts FTP data connections from other than
+      port 20.  This allows one ftp connections
+      from two hosts which are both running packet
+      aliasing.
+
+    - Checksum error on FTP transfers.  Problem
+      in code located by Martin Renters and
+      Brian Somers.
+
+Version 1.8: January 14, 1997 (cjm)
+    - Fixed data type error in function StartPoint()
+      in alias_db.c (this bug did not exist before v1.7)
+      Problem in code located by Ari Suutari.
+
+Version 1.9: February 1, 1997 (Eivind Eklund <perhaps@yes.no>)
+    - Added support for IRC DCC (ee)
+
+    - Changed the aliasing routines to use ANSI style
+      throughout (ee)
+
+    - Minor API changes for integration with other
+      programs than PPP (ee)
+
+    - Fixed minor security hole in alias_ftp.c for
+      other applications of the aliasing software.
+      Hole could _not_ manifest in ppp+pktAlias, but
+      could potentially manifest in other applications
+      of the aliasing. (ee)
+
+    - Connections initiated from packet aliasing
+      host machine will not have their port number
+      aliased unless it conflicts with an aliasing
+      port already being used. (There is an option
+      to disable this for debugging) (cjm)
+
+    - Sockets will be allocated in cases where
+      there might be port interference with the
+      host machine.  This can be disabled in cases
+      where the ppp host will be acting purely as a
+      masquerading router and not generate any
+      traffic of its own.
+      (cjm)
+
+Version 2.0: March, 1997 (cjm)
+    - Aliasing links are cleared only when a host interface address
+      changes.
+
+    - PacketAliasPermanentLink() API added.
+
+    - Option for only aliasing private, unregistered
+      IP addresses added.
+
+    - Substantial rework to the aliasing lookup engine.
+
+Version 2.1: May, 1997 (cjm)
+    - Continuing rework to the aliasing lookup engine
+      to support multiple incoming addresses and static
+      NAT.  PacketAliasRedirectPort() and
+      PacketAliasRedirectAddr() added to API.
+
+    - Now supports outgoing as well as incoming ICMP
+      error messges.
+
+Version 2.2: July, 1997 (cjm)
+    - Rationalized API function names to all begin with
+      "PacketAlias..."  Old function names are retained
+      for backwards compatitibility.
+
+    - Packet aliasing engine will now free memory of
+      fragments which are never resolved after a timeout
+      period.  Once a fragment is resolved, it becomes
+      the users responsibility to free the memory.
+
+Version 2.3: August 11, 1997 (cjm)
+    - Problem associated with socket file descriptor
+      accumulation in alias_db.c corrected.  The sockets
+      had to be closed when a binding failed.  Problem 
+      in code located by Gordon Burditt.
+
+Version 2.4: September 1, 1997 (cjm)
+    - PKT_ALIAS_UNREGISTERED_ONLY option repaired.
+      This part of the code was incorrectly re-implemented
+      in version 2.1.
+
+Version 2.5: December, 1997 (ee)
+    - Added PKT_ALIAS_PUNCH_FW mode for firewall
+      bypass of FTP/IRC DCC data connections.  Also added
+      improved TCP connection monitoring.
+
+Version 2.6: May, 1998 (amurai)
+    - Added supporting routine for NetBios over TCP/IP.
+
+Version 3.0: January 1, 1999
+    - Transparent proxying support added.
+    - PPTP redirecting support added based on patches
+      contributed by Dru Nelson <dnelson@redwoodsoft.com>.