[PATCH] net: ipv6: Fix link-partner MAC address assignment

[Viacheslav Mitrofanov]

MAC address of a link-partner is not saved for future use because of
bad condition of if statement. Moreover it can potentially cause to
NULL-pointer dereference.

Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov at yadro.com>
---
 net/ndisc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ndisc.c b/net/ndisc.c
index 3c0eeeaea3..56fc6390bc 100644
--- a/net/ndisc.c
+++ b/net/ndisc.c
@@ -264,7 +264,7 @@ int ndisc_receive(struct ethernet_hdr *et, struct ip6_hdr *ip6, int len)
 			ndisc_extract_enetaddr(ndisc, neigh_eth_addr);
 
 			/* save address for later use */
-			if (!net_nd_packet_mac)
+			if (net_nd_packet_mac)
 				memcpy(net_nd_packet_mac, neigh_eth_addr, 7);
 
 			/* modify header, and transmit it */
-- 
2.30.2