diff --git a/p4src/static-mapping.p4 b/p4src/static-mapping.p4
index 77c7602..7f60884 100644
--- a/p4src/static-mapping.p4
+++ b/p4src/static-mapping.p4
@@ -46,8 +46,12 @@ control MyIngress(inout headers hdr,
     }
 
     apply {
-        v6_routing.apply()
-        v4_routing.apply()
+        if(hdr.ipv6.isValid()) {
+            v6_routing.apply();
+        }
+        if(hdr.ipv4.isValid()) {
+            v4_routing.apply();
+        }
     }
 }