diff -urNd net-mgmt/arpwatch.orig/files/patch-ec.c net-mgmt/arpwatch/files/patch-ec.c
--- net-mgmt/arpwatch.orig/files/patch-ec.c	1970-01-01 03:00:00.000000000 +0300
+++ net-mgmt/arpwatch/files/patch-ec.c	2018-09-24 13:00:06.693889000 +0300
@@ -0,0 +1,20 @@
+--- ec.c.orig	2018-09-24 09:56:56 UTC
++++ ec.c
+@@ -201,7 +201,7 @@ str2e(register char *str, register u_cha
+ 	u_int n[6];
+ 
+ 	MEMSET(n, 0, sizeof(n));
+-	if (sscanf(str, "%x:%x:%x:%x:%x:%x",
++	if (sscanf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
+ 	    &n[0], &n[1], &n[2], &n[3], &n[4], &n[5]) != 6)
+ 		return (0);
+ 	for (i = 0; i < 6; ++i) {
+@@ -218,7 +218,7 @@ e2str(register u_char *e)
+ {
+ 	static char str[32];
+ 
+-	(void)sprintf(str, "%x:%x:%x:%x:%x:%x",
++	(void)sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
+ 	    e[0], e[1], e[2], e[3], e[4], e[5]);
+ 	return (str);
+ }
diff -urNd net-mgmt/arpwatch.orig/files/patch-massagevendor net-mgmt/arpwatch/files/patch-massagevendor
--- net-mgmt/arpwatch.orig/files/patch-massagevendor	1970-01-01 03:00:00.000000000 +0300
+++ net-mgmt/arpwatch/files/patch-massagevendor	2018-09-24 13:45:03.347710000 +0300
@@ -0,0 +1,11 @@
+--- massagevendor.orig	2018-09-24 10:43:54 UTC
++++ massagevendor
+@@ -15,7 +15,7 @@
+     awk -f euppertolower.awk | \
+     sed -n \
+     -e 's/^\([0-9A-Za-z][0-9A-Za-z]\)\([0-9A-Za-z][0-9A-Za-z]\)\([0-9A-Za-z][0-9A-Za-z]\)[ 	]\(.*\)$/\1:\2:\3	\4/' \
+-    -e 's/^0//' -e 's/:0\([0-9A-Za-z]\)/:\1/g' -e p | \
++    -e p | \
+     sort | \
+     awk -f duplicates.awk ) | \
+     awk -f p.awk | \
diff -urNd net-mgmt/arpwatch.orig/Makefile net-mgmt/arpwatch/Makefile
--- net-mgmt/arpwatch.orig/Makefile	2018-09-24 13:01:41.785727000 +0300
+++ net-mgmt/arpwatch/Makefile	2018-09-24 14:09:00.492072000 +0300
@@ -3,7 +3,7 @@
 
 PORTNAME=	arpwatch
 DISTVERSION=	2.1a15
-PORTREVISION=	10
+PORTREVISION=	11
 CATEGORIES=	net-mgmt
 MASTER_SITES=	ftp://ftp.ee.lbl.gov/ \
 		GENTOO