On Tue, 10 Jan 2006, Alex Harford wrote: > On 1/10/06, Herbert Graf wrote: >> >> Is there a trick to enabling the reception of broadcast packets? >> >> Does anyone have a compilable example of a problem that receives >> broadcast UDP packets? > > I wonder if your networking equipment is sending out the packets with > a broadcast of 255.255.255.255 (ie every node on the internet). > > Use ethereal to do a capture to see if your computer is actually > seeing those packets. You may need to use a more specific mask > (192.168.0.255) or change your switch/router's settings. Doesn't broadcasting work in groups ? And a node must be enabled to receive broadcast by giving it an address in the group (in addition to the normal address) ? That's the way I remember it. Only after that does the broadcast enter the tcp/ip stack of a client. Also the routers must be configured to pass this traffic, else hosts won't see it. Afaik switches (as opposed to hubs) must also be enabled for this. See here: http://www.linuxjournal.com/node/3041/print http://www.tldp.org/HOWTO/Multicast-HOWTO.html Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist