1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index caa3b7d2e48a..9a5c0ce7ff35 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -49,6 +49,7 @@
 #include <linux/seq_file.h>
 #include <linux/mroute.h>
 #include <linux/init.h>
+#include <linux/if_ether.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <linux/skbuff.h>
@@ -193,7 +194,7 @@ static struct net_device_stats *reg_vif_get_stats(struct net_device *dev)
 static void reg_vif_setup(struct net_device *dev)
 {
         dev->type               = ARPHRD_PIMREG;
-        dev->mtu                = 1500 - sizeof(struct iphdr) - 8;
+        dev->mtu                = ETH_DATA_LEN - sizeof(struct iphdr) - 8;
         dev->flags              = IFF_NOARP;
         dev->hard_start_xmit    = reg_vif_xmit;
         dev->get_stats          = reg_vif_get_stats;