diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index 9cabfdf..f1dcab8 100644
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -224,6 +224,10 @@
 				udp->src_port, TRANSPORT_PROTO_UDP);
     }
 
+  /* Set the sw_if_index[VLIB_RX] to the interface we received
+   * the connection on (the local interface) */
+  vnet_buffer (b)->sw_if_index[VLIB_RX] = vnet_buffer (b)->ip.rx_sw_if_index;
+
   if (PREDICT_TRUE (!(b->flags & VLIB_BUFFER_NEXT_PRESENT)))
     b->current_length = hdr->data_length;
   else