Florian Westphal
f83a7ea207
netfilter: xt_rpfilter: skip locally generated broadcast/multicast, too
...
Alex Efros reported rpfilter module doesn't match following packets:
IN=br.qemu SRC=192.168.2.1 DST=192.168.2.255 [ .. ]
(netfilter bugzilla #814 ).
Problem is that network stack arranges for the locally generated broadcasts
to appear on the interface they were sent out, so the IFF_LOOPBACK check
doesn't trigger.
As -m rpfilter is restricted to PREROUTING, we can check for existing
rtable instead, it catches locally-generated broad/multicast case, too.
Signed-off-by: Florian Westphal <fw@strlen.de >
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org >
2013-04-19 00:11:59 +02:00
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