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Diffstat (limited to 'net/ipv4/arp.c')
-rw-r--r--net/ipv4/arp.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 8a3881e28ac..090e9991ac2 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -801,11 +801,8 @@ static int arp_process(struct sk_buff *skb)
* cache.
*/
- /*
- * Special case: IPv4 duplicate address detection packet (RFC2131)
- * and Gratuitous ARP/ARP Announce. (RFC3927, Section 2.4)
- */
- if (sip == 0 || tip == sip) {
+ /* Special case: IPv4 duplicate address detection packet (RFC2131) */
+ if (sip == 0) {
if (arp->ar_op == htons(ARPOP_REQUEST) &&
inet_addr_type(net, tip) == RTN_LOCAL &&
!arp_ignore(in_dev, sip, tip))
@@ -1307,7 +1304,9 @@ static void arp_format_neigh_entry(struct seq_file *seq,
hbuffer[k++] = hex_asc_lo(n->ha[j]);
hbuffer[k++] = ':';
}
- hbuffer[--k] = 0;
+ if (k != 0)
+ --k;
+ hbuffer[k] = 0;
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
}
#endif