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authorLinus Lüssing <linus.luessing@web.de>2011-02-17 08:17:52 +0000
committerDavid S. Miller <davem@davemloft.net>2011-02-22 10:07:29 -0800
commitfe29ec41aaa51902aebd63658dfb04fe6fea8be5 (patch)
treec9325f8cb76331c307b39d1348f8d668dfdfbc58 /security/Kconfig
parent36cff5a10c6b003fa2d0464848d5664b2bf723e0 (diff)
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bridge: Use IPv6 link-local address for multicast listener queries
Currently the bridge multicast snooping feature periodically issues IPv6 general multicast listener queries to sense the absence of a listener. For this, it uses :: as its source address - however RFC 2710 requires: "To be valid, the Query message MUST come from a link-local IPv6 Source Address". Current Linux kernel versions seem to follow this requirement and ignore our bogus MLD queries. With this commit a link local address from the bridge interface is being used to issue the MLD query, resulting in other Linux devices which are multicast listeners in the network to respond with a MLD response (which was not the case before). Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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