Improving Makefile

Change-Id: I7460ef36b2492e2715e312c19e034c6c83b505ea
diff --git a/handlers.go b/handlers.go
index 0950ca7..eb8b8fc 100644
--- a/handlers.go
+++ b/handlers.go
@@ -144,7 +144,7 @@
 			} else {
 				ipaddr = addr.String()
 			}
-			log.Debugf("ID: %s, Uplink: %s, IPAddress: %s, NasID: %s", devID, toInt(device.Uplink), ipaddr, device.NasID)
+			log.Debugf("ID: %s, Uplink: %d, IPAddress: %s, NasID: %s", devID, toInt(device.Uplink), ipaddr, device.NasID)
 			sadisDevice := sadisDevice{
 				ID:         devID,
 				Uplink:     toInt(device.Uplink),