Mayo, Richard A RDECOM CERDEC STCD SRI wrote: > Can anybody tell me how to configure the multicast groups my computer will > attempt to join? I when my computers boot, I can see a IGMP join request for > 224.0.0.9, but I would like to add more.
When a program opens a socket for listening, it requests which groups it will listen on using an option in setsockopt(), and bind(). When the program closes the socket or exits, the group is left. The IGMP Join/Leave messages are only needed if you have multicast capable routers and are running a multicast routing protocol like PIM and want messages from other subnets. Any group can be joined that is broadcasted locally without those messages. If you put your network card in promiscuous mode, as is done by most packet sniffers, you should be receiving all locally transmitted packets, including multicast. > > > Any suggestions? > > Rich Mayo > SRI International > x76435 > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > -- Loren M. Lang [EMAIL PROTECTED] http://www.alzatex.com/ Public Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc Fingerprint: CEE1 AAE2 F66C 59B5 34CA C415 6D35 E847 0118 A3D2
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