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path: root/drivers/net/wan/syncppp.c
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Diffstat (limited to 'drivers/net/wan/syncppp.c')
-rw-r--r--drivers/net/wan/syncppp.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wan/syncppp.c b/drivers/net/wan/syncppp.c
index 67fc67cfd45..5c71af6ea3a 100644
--- a/drivers/net/wan/syncppp.c
+++ b/drivers/net/wan/syncppp.c
@@ -51,6 +51,7 @@
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
+#include <net/net_namespace.h>
#include <net/syncppp.h>
#include <asm/byteorder.h>
@@ -1445,6 +1446,11 @@ static void sppp_print_bytes (u_char *p, u16 len)
static int sppp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *p, struct net_device *orig_dev)
{
+ if (dev->nd_net != &init_net) {
+ kfree_skb(skb);
+ return 0;
+ }
+
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
return NET_RX_DROP;
sppp_input(dev,skb);