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Date: Fri, 4 Nov 2011 21:27:39 +0200 From: Kevin Wilson <wkevils@...il.com> To: François-Xavier Le Bail <fx.lebail@...oo.com> Cc: David Stevens <dlstevens@...ibm.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "netdev-owner@...r.kernel.org" <netdev-owner@...r.kernel.org> Subject: Re: iproute2 neighboring Hi, Thanks all responses! The answer that there is a fixed mapping in case of multicast is reasonable, and I assume this is the reason for not seeing multicast addresses in neigh table. >You can also see group memberships with "ip m". I wonder whether I can know from "ip -m" which multicast addresses are attached to which ip addresses. For example, "ip -m" shows: 2: em1 ... ip1 ... ip2 ... ip3 inet 224.0.0.1 inet6 ff02::1:ffcf:c821 inet6 ff02::1 is the order important here? namely, is ip1 belongs to 224.0.0.1, ip2 belongs to ff02::1:ffcf:c821, and ip3 belong to ff02::1? rgs, Kevin 2011/11/4 François-Xavier Le Bail <fx.lebail@...oo.com>: > > > > > ----- Original Message ----- >> From: David Stevens <dlstevens@...ibm.com> >> To: Kevin Wilson <wkevils@...il.com> >> Cc: netdev@...r.kernel.org; netdev-owner@...r.kernel.org >> Sent: Friday, November 4, 2011 4:46 PM >> Subject: Re: iproute2 neighboring >> >>> From: Kevin Wilson <wkevils@...il.com> >> >>> Hi, >>> It seems to me that "ip -6 neigh show" does not show multicast >> entries >> from >>> IPv6 neighboring table. Is there a reason for this ? >> >> Multicast memberships aren't in the neighbor table. The >> neighbor table is for translating protocol addresses to >> MAC addresses and that translation is fixed for multicast >> destinations. >> >> You can see group memberships with "netstat -g". There are also >> some data in /proc/net/{dev_mcast,igmp6,mcfilter6} depending on >> what you're looking for. >> >> +-DLS > > Hi, > > You can also see group memberships with "ip m". > > François-Xavier > > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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