diff --git a/src/config/defaults/efi.h b/src/config/defaults/efi.h
index 74effa4253..56b13e5fd9 100644
--- a/src/config/defaults/efi.h
+++ b/src/config/defaults/efi.h
@@ -23,6 +23,8 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #define REBOOT_EFI
 #define ACPI_EFI
 
+#define	NET_PROTO_IPV6		/* IPv6 protocol */
+
 #define DOWNLOAD_PROTO_FILE	/* Local filesystem access */
 
 #define	IMAGE_EFI		/* EFI image support */
diff --git a/src/config/general.h b/src/config/general.h
index 3c14a2cd06..a7c05b0c0c 100644
--- a/src/config/general.h
+++ b/src/config/general.h
@@ -35,7 +35,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  */
 
 #define	NET_PROTO_IPV4		/* IPv4 protocol */
-#undef	NET_PROTO_IPV6		/* IPv6 protocol */
+//#define	NET_PROTO_IPV6		/* IPv6 protocol */
 #undef	NET_PROTO_FCOE		/* Fibre Channel over Ethernet protocol */
 #define	NET_PROTO_STP		/* Spanning Tree protocol */
 #define	NET_PROTO_LACP		/* Link Aggregation control protocol */