> You don't. Broadcasts don't leave a segment by design. If you want > "broadcast-like" function for multiple segments, you need to use multicast, > which is routable.
In theory you can also use the IP options for source routing , providing you have machines set to allow them. For internal custom hacks that can be quite doable but not as a general solution [A lot of routers/firewalls drop source routed to broadcast frames - they are known in the internet world as "letterbombs" for good reason]
