diff --git a/configure.ac b/configure.ac
index 05fc00d7fa..2c8be53dd3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -326,7 +326,8 @@ AC_CHECK_DECLS([IFLA_MACVLAN_FLAGS,
                 IFLA_VLAN_PROTOCOL,
                 IFLA_VXLAN_LOCAL6,
                 IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
-                IFLA_BRIDGE_VLAN_INFO],
+                IFLA_BRIDGE_VLAN_INFO,
+                IFLA_BRPORT_UNICAST_FLOOD],
 [], [], [[
 #include <inttypes.h>
 #include <netinet/in.h>
diff --git a/src/shared/missing.h b/src/shared/missing.h
index 8c6698cff1..4faff89b6c 100644
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -519,6 +519,22 @@ static inline int setns(int fd, int nstype) {
 #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1)
 #endif
 
+#if !HAVE_DECL_IFLA_BRPORT_UNICAST_FLOOD
+#define IFLA_BRPORT_UNSPEC 0
+#define IFLA_BRPORT_STATE 1
+#define IFLA_BRPORT_PRIORITY 2
+#define IFLA_BRPORT_COST 3
+#define IFLA_BRPORT_MODE 4
+#define IFLA_BRPORT_GUARD 5
+#define IFLA_BRPORT_PROTECT 6
+#define IFLA_BRPORT_FAST_LEAVE 7
+#define IFLA_BRPORT_LEARNING 8
+#define IFLA_BRPORT_UNICAST_FLOOD 9
+#define __IFLA_BRPORT_MAX 10
+
+#define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
+#endif
+
 #ifndef IPV6_UNICAST_IF
 #define IPV6_UNICAST_IF 76
 #endif