[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>
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 9cde8c6..6706d3a 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -30,7 +30,7 @@
#include <linux/netfilter_ipv4/ipt_CLUSTERIP.h>
#include <linux/netfilter_ipv4/ip_conntrack.h>
-#define CLUSTERIP_VERSION "0.6"
+#define CLUSTERIP_VERSION "0.7"
#define DEBUG_CLUSTERIP
@@ -524,8 +524,9 @@
|| arp->ar_pln != 4 || arp->ar_hln != ETH_ALEN)
return NF_ACCEPT;
- /* we only want to mangle arp replies */
- if (arp->ar_op != htons(ARPOP_REPLY))
+ /* we only want to mangle arp requests and replies */
+ if (arp->ar_op != htons(ARPOP_REPLY)
+ && arp->ar_op != htons(ARPOP_REQUEST))
return NF_ACCEPT;
payload = (void *)(arp+1);