Date: Thu, 30 Mar 2000 14:12:15 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: Wilbert de Graaf <wilbertdg@hetnet.nl> Cc: freebsd-net@FreeBSD.ORG Subject: The socket structure & igmpv3 Message-ID: <200003301912.OAA92561@khavrinen.lcs.mit.edu> In-Reply-To: <38E3A371.8030917C@hetnet.nl> References: <38E3A371.8030917C@hetnet.nl>
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<<On Thu, 30 Mar 2000 10:56:49 -0800, Wilbert de Graaf <wilbertdg@hetnet.nl> said: > So my question is ... Is it true that such a filter should be attached > / stored within the socket datastructure ? Yes and no. You need to look more closely at how the FreeBSD implementation works. Essentially, there are two levels of multicast group subscription: 1) the per-interface subscription table (which drives IGMP), and 2) the per-socket subscription table (which is used mainly to ensure that groups are properly unsubscribed when the socket is closed). Part (1) is not quite entirely different from the 4.4-Lite code. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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