diff options
author | Andrew Lunn <andrew@lunn.ch> | 2015-05-01 16:39:54 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2015-05-04 00:04:08 -0400 |
commit | 6a21165480a066a27c1f1dbd32aec581c612ba23 (patch) | |
tree | f9322aa5dfe035cf9710b5ef2b1d8a8f03057edd /drivers | |
parent | 087c1a601ad7f851a2d31f5fa0e5e9dfc766df55 (diff) |
net: ipv4: route: Fix sending IGMP messages with link address
In setups with a global scope address on an interface, and a lesser
scope address on an interface sending IGMP reports, the reports can be
sent using the other interfaces global scope address rather than the
local interface address. RFC 2236 suggests:
Ignore the Report if you cannot identify the source address of
the packet as belonging to a subnet assigned to the interface on
which the packet was received.
since such reports could be forged.
Look at the protocol when deciding if a RT_SCOPE_LINK address should
be used for the packet.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions