diff --git a/clatd.h b/clatd.h
index 0a48013..0f4809d 100644
--- a/clatd.h
+++ b/clatd.h
@@ -23,7 +23,7 @@
 
 #define MAXMTU 1500
 #define PACKETLEN (MAXMTU+sizeof(struct tun_pi))
-#define CLATD_VERSION "1.2"
+#define CLATD_VERSION "1.3"
 
 // how frequently (in seconds) to poll for an address change while traffic is passing
 #define INTERFACE_POLL_FREQUENCY 30
@@ -32,7 +32,7 @@
 #define NO_TRAFFIC_INTERFACE_POLL_FREQUENCY 90
 
 struct tun_data {
-  char device6[IFNAMSIZ], device4[IFNAMSIZ];
+  char device4[IFNAMSIZ];
   int read_fd6, write_fd6, fd4;
 };