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       src_vipa.sh program params


       src_vipa.sh  starts program using params as parameters, if
       specified. The program will use source  address  selection
       as  described  by the rules in the configuration file. The
       default configuration file is /etc/src_vipa.conf.  If  the
       environment  variable SRC_VIPA_CONFIG_FILE is defined, its
       content  specifies  the  configuration   file   used   for


       /etc/src_vipa.conf   or,   if   the  environment  variable
       SRC_VIPA_CONFIG_FILE is defined,  the  file  specified  in
       SRC_VIPA_CONFIG_FILE  contains  lines that look like these
       three lines:

        # comment
        D1.D2.D3.D4/MASK S1.S2.S3.S4
        .INADDR_ANY P1-P2 S1.S2.S3.S4
        .INADDR_ANY P S1.S2.S3.S4

       #      Lines starting with # are ignored

              (MASK is the nubmer of set bits in the subnet mask)
              specifies a range of destination addresses. As soon
              as a socket is opened and connected to these desti­
              nation addresses and the application does not do an
              explicit bind to a source address, src_vipa does  a
              bind  to  S1.S2.S3.S4.   Instead of IP addresses in
              dotted notation, hostnames can be used  which  will
              be resolved using DNS.

       .INADDR_ANY P1-P2 S1.S2.S3.S4

       .INADDR_ANY P S1.S2.S3.S4
              will  cause  bind  calls  with  INADDR_ANY as local
              address to be intercepted, if the port  the  socket
              is  bound on is between P1 and P2 (including P1 and
              P2). In that case, INADDR_ANY will be  replaced  by
              S1.S2.S3.S4 (which can be All appearance.
              That means, two .INADDR_ANY statements can be  used
              to  make  bind be intercepted for every port except
              for a certain range.  This  is  useful  e.  g.  for


       /etc/src_vipa.conf  is  the default configuration file for


       The iproute2 package (command line utility ip) is able  to
       modify  source  address  selection on a route basis in the
       kernel FIB.


       Copyright 2001/2002 IBM Corporation

       Published under the terms and conditions of the CPL  (com­
       mon public license).

       See  the file LICENSE provided with the package for a copy
       of the CPL.


       This    man-page    was    written    by    Utz     Bacher

                          Fri Mar 1 2002              SRC_VIPA(8)



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