--- libnet/src/libnet_checksum.c

+++ libnet/src/libnet_checksum.c

@@ -1,5 +1,5 @@

 /*

- *  $Id: libnet_checksum.c,v 1.13 2004/03/01 20:26:12 mike Exp $

+ *  $Id: libnet_checksum.c,v 1.14 2004/11/09 07:05:07 mike Exp $

  *

  *  libnet

  *  libnet_checksum.c - checksum routines

@@ -38,10 +38,16 @@

 #else

 #include "../include/win32/libnet.h"

 #endif

+

 int

 libnet_in_cksum(u_int16_t *addr, int len)

 {

     int sum;

+    union

+    {

+        u_int16_t s;

+        u_int8_t b[2];

+    }pad;

     sum = 0;

@@ -50,9 +56,12 @@

         sum += *addr++;

         len -= 2;

     }

+

     if (len == 1)

     {

-        sum += *(u_int16_t *)addr;

+        pad.b[0] = *(u_int8_t *)addr;

+        pad.b[1] = 0;

+        sum += pad.s;

     }

     return (sum);