* Actually implemented the SO_BINDTODEVICE socket option I added some time ago.

* This makes it possible to select a specific device, even if no interface
  has been configured for it yet. To make it work, each interface now has a
  private direct route which will be returned if a socket is bound to a device.
* This will be used for example in DHCP to make it work when more than one
  adapter is attached.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27983 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/net/net_socket.h

@@ -29,6 +29,7 @@ typedef struct net_socket {
 
 	int						options;
 	int						linger;
+	int						bound_to_device;
 
 	struct {
 		uint32		buffer_size;