1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
index 9896f46cbbf1..af8addbaa3c1 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -34,6 +34,7 @@
 #include <net/flow_dissector.h>
 
 #define IPV4_MAX_PMTU           65535U          /* RFC 2675, Section 5.1 */
+#define IPV4_MIN_MTU            68                      /* RFC 791 */
 
 struct sock;