diff --git a/bacnet-stack/demo/server/Makefile b/bacnet-stack/demo/server/Makefile
index 242e91db..0e06b0d8 100644
--- a/bacnet-stack/demo/server/Makefile
+++ b/bacnet-stack/demo/server/Makefile
@@ -8,8 +8,8 @@ TARGET = bacserv
 # Configure the BACnet Datalink Layer
 #BACDL_DEFINE = -DBACDL_ETHERNET
 #BACDL_DEFINE = -DBACDL_ARCNET
-BACDL_DEFINE = -DBACDL_MSTP
-#BACDL_DEFINE = -DBACDL_BIP -DBIP_DEBUG
+#BACDL_DEFINE = -DBACDL_MSTP
+BACDL_DEFINE = -DBACDL_BIP -DBIP_DEBUG
 BACNET_DEFINES = -DPRINT_ENABLED=1 -DBACAPP_ALL -DBACFILE
 DEFINES = $(BACNET_DEFINES) $(BACDL_DEFINE)
 
diff --git a/bacnet-stack/lib/Makefile b/bacnet-stack/lib/Makefile
index bbdd3aaf..2edd3fad 100644
--- a/bacnet-stack/lib/Makefile
+++ b/bacnet-stack/lib/Makefile
@@ -12,8 +12,8 @@ LIBRARY = lib$(TARGET).a
 BACNET_DEFINES=-DPRINT_ENABLED=1 -DBACAPP_ALL -DBACFILE
 #BACDL_DEFINE=-DBACDL_ETHERNET=1
 #BACDL_DEFINE=-DBACDL_ARCNET=1
-BACDL_DEFINE=-DBACDL_MSTP=1
-#BACDL_DEFINE=-DBACDL_BIP=1
+#BACDL_DEFINE=-DBACDL_MSTP=1
+BACDL_DEFINE=-DBACDL_BIP=1
 
 DEFINES = $(BACNET_DEFINES) $(BACDL_DEFINE)
 # directories