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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Fri, 9 Jan 2009 16:02:19 +0000 (UTC)
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Subject: cvs commit: src/sys/conf NOTES options src/sys/netinet in.h
 in_pcb.c in_pcb.h ip_output.c
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adrian      2009-01-09 16:02:19 UTC

  FreeBSD src repository

  Modified files:
    sys/conf             NOTES options 
    sys/netinet          in.h in_pcb.c in_pcb.h ip_output.c 
  Log:
  SVN rev 186955 on 2009-01-09 16:02:19Z by adrian
  
  Implement a new IP option (not compiled/enabled by default) to allow
  applications to specify a non-local IP address when bind()'ing a socket
  to a local endpoint.
  
  This allows applications to spoof the client IP address of connections
  if (obviously!) they somehow are able to receive the traffic normally
  destined to said clients.
  
  This patch doesn't include any changes to ipfw or the bridging code to
  redirect the client traffic through the PCB checks so TCP gets a shot
  at it. The normal behaviour is that packets with a non-local destination
  IP address are not handled locally. This can be dealth with some IPFW hackery;
  modifications to IPFW to make this less hacky will occur in subsequent
  commmits.
  
  Thanks to Julian Elischer and others at Ironport. This work was approved
  and donated before Cisco acquired them.
  
  Obtained from:  Julian Elischer and others
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.1520    +8 -0      src/sys/conf/NOTES
  1.655     +1 -0      src/sys/conf/options
  1.105     +1 -0      src/sys/netinet/in.h
  1.237     +6 -1      src/sys/netinet/in_pcb.c
  1.125     +2 -0      src/sys/netinet/in_pcb.h
  1.295     +19 -0     src/sys/netinet/ip_output.c