print space between '!' and mac address (Kristian Gronfeldt Sorensen)
diff --git a/extensions/libipt_mac.c b/extensions/libipt_mac.c
index 3710117..b9d3b36 100644
--- a/extensions/libipt_mac.c
+++ b/extensions/libipt_mac.c
@@ -90,7 +90,7 @@
 {
 	unsigned int i;
 
-	printf("%s%02X", invert ? "!" : "", macaddress[0]);
+	printf("%s%02X", invert ? "! " : "", macaddress[0]);
 	for (i = 1; i < ETH_ALEN; i++)
 		printf(":%02X", macaddress[i]);
 	printf(" ");