Messages in this thread | | | Date | Sat, 3 Mar 2001 21:21:48 +0100 (CET) | From | Eric Lammerts <> | Subject | Re: Forwarding broadcast traffic |
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On Sat, 3 Mar 2001, Jon Masters wrote: > e.g. on desktop a broadcast udp packet (with a specified port) needs to > go not only to itself and the router but also the "REST OF LAN" part > too - and vice versa. Removing the router is not an option.
Write an application that creates 2 sockets listening on the same port but different interfaces (using the SO_BINDTODEVICE socket option, see the dhcp source for an example). Then forward any packet you receive on one socket to the other side. If you need to keep the source ip intact, you may have to use a raw socket for the sending part.
You could adapt a DHCP relay program to do this stuff instead of writing it from scratch.
Eric
-- Eric Lammerts <eric@lammerts.org> | "An NT server can be run by http://www.lammerts.org | an idiot, and usually is."
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