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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
[NETFILTER]: ipt_CLUSTERIP: fix ARP mangling
This patch adds mangling of ARP requests (in addition to replies),
since ARP caches are made from snooping both requests and replies.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by Harald Welte and committed by David S. Miller 4095ebf1 85c1937b
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net/ipv4/netfilter/ipt_CLUSTERIP.c
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-3
net/ipv4/netfilter/ipt_CLUSTERIP.c
···
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#include <linux/netfilter_ipv4/ipt_CLUSTERIP.h>
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#include <linux/netfilter_ipv4/ip_conntrack.h>
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#define CLUSTERIP_VERSION "0.6"
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#define CLUSTERIP_VERSION "0.7"
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#define DEBUG_CLUSTERIP
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···
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|| arp->ar_pln != 4 || arp->ar_hln != ETH_ALEN)
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return NF_ACCEPT;
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/* we only want to mangle arp replies */
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if (arp->ar_op != htons(ARPOP_REPLY))
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/* we only want to mangle arp requests and replies */
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if (arp->ar_op != htons(ARPOP_REPLY)
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&& arp->ar_op != htons(ARPOP_REQUEST))
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return NF_ACCEPT;
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payload = (void *)(arp+1);