nlif: fix possible re-insertion in the list of interfaces

This patch fixes a possible re-insertion of an existing entry in
the list of interfaces.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/iftable.c b/src/iftable.c
index 7cca66f..3a4b0cb 100644
--- a/src/iftable.c
+++ b/src/iftable.c
@@ -98,7 +98,8 @@ static int iftable_add(struct nlmsghdr *n, void *arg)
 	}
 	strcpy(this->name, RTA_DATA(cb[IFLA_IFNAME]));
 
-	list_add(&this->head, &h->ifindex_hash[hash]);
+	if (!found)
+		list_add(&this->head, &h->ifindex_hash[hash]);
 
 	return 1;
 }