diff --git a/include/lwipopts.h b/include/lwipopts.h
index c38eaaf..4cbbf2e 100644
--- a/include/lwipopts.h
+++ b/include/lwipopts.h
@@ -1220,7 +1220,7 @@
  * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
  */
 #ifndef LWIP_HAVE_LOOPIF
-#define LWIP_HAVE_LOOPIF                1
+#define LWIP_HAVE_LOOPIF                0
 #endif
 
 /*
@@ -1232,7 +1232,7 @@
  * LWIP_HAVE_SLIPIF==1: Support slip interface and slipif.c
  */
 #ifndef LWIP_HAVE_SLIPIF
-#define LWIP_HAVE_SLIPIF                1
+#define LWIP_HAVE_SLIPIF                0
 #endif
 
 /*
diff --git a/lwip/netif/espenc.c b/lwip/netif/espenc.c
index d742489..96cb5d5 100644
--- a/lwip/netif/espenc.c
+++ b/lwip/netif/espenc.c
@@ -5,6 +5,7 @@
 #include "gpio.h"
 #include "mem.h"
 
+#if 0	// DEBUG: disable all espenc - we dont need it for MeterLogger hardware
 struct netif enc_netif;
 
 typedef enum {
@@ -451,3 +452,4 @@ struct netif* espenc_init(uint8_t *mac_addr, ip_addr_t *ip, ip_addr_t *mask, ip_
         return new_netif;
 }
 
+#endif