Messages in this thread | | | Date | Thu, 4 Jun 2009 16:19:56 -0700 (PDT) | From | david@lang ... | Subject | Re: When does Linux drop UDP packets? |
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On Thu, 4 Jun 2009, Alexander Clouter wrote:
> Philipp Reh <sefi@s-e-f-i.de> wrote: >> >> I have the following setting in which a client that resides on the same >> physical network as a server wants to receive any UDP packet that >> arrives on any of its interfaces sent by that server. >> > Read up about multicasting, it will do what you want, does not depend on > the IP address of the destination workstation and will also cross > subnets if you want it to. > > It's dead easy to transmit and receive multicast traffic, broadcasting > network traffic is so 1980's :)
there is only a difference between multicast and broadcast traffic if you are spanning subnets.
but the issue here is the rp_filter, and that would also filter out multicast packets from sources that you don't have routes to.
David Lang
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