XPost: comp.os.ms-windows.networking.tcp-ip   
   From: the_unlord@hotmail.com   
      
   Hi,   
      
   How can I send a limited broadcast to a specific interface?   
   It seems behaviour on a multihomed PC changed from Windows XP to Vista:   
   XP sends out the broadcast to all interfaces in the sendto call, but   
   Vista only sends it to 1 (and it's a mystery to me which one it selects   
   and why).   
   Now, we really need this to work, but I haven't got the faintest clue   
   how to do it.   
   I tried first binding to an IP of 1 interface and then broadcast, but XP   
   still sends it out on all interfaces (haven't checked what VIsta does).   
      
   It seems on linux, you can use SO_BINDTODEVICE, but this doesn't seem to   
   exist. It has to be possible, because, how could a DHCP server ever work   
   on a multihomed Vista (or doesn't it?).   
      
   For the record: using the subnet broadcast address of each interface is   
   NOT a solution, we need limited broadcast (we need to be able to reach   
   devices that have wrong network settings in order to reconfigure them)!   
      
   Any advice or pointers would be VERY much appreciated!   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)