Fix for when arp_disp_2() is called without opt_n set.  If there is a DNS lookup, an

entry is added to /proc/net/arp after fopen(), resulting in a duplicate entry.

--- net-tools-1.60/arp.c.fgets	2005-12-10 14:52:04.000000000 -0500

+++ net-tools-1.60/arp.c	2005-12-11 00:15:59.000000000 -0500

@@ -528,7 +528,7 @@ static int arp_show(char *name)

     int type, flags;

     FILE *fp;

     char *hostname;

-    int num, entries = 0, showed = 0;

+    int num, entries, showed = 0;

     host[0] = '\0';

@@ -546,18 +546,21 @@ static int arp_show(char *name)

 	perror(_PATH_PROCNET_ARP);

 	return (-1);

     }

+    /* Count number of entries, in case file changes */

+    for (entries = 0; fgets(line, sizeof(line), fp); entries++);

+    entries--;

+    fseek (fp, 0L, SEEK_SET);

     /* Bypass header -- read until newline */

     if (fgets(line, sizeof(line), fp) != (char *) NULL) {

 	strcpy(mask, "-");

 	strcpy(dev, "-");

 	/* Read the ARP cache entries. */

-	for (; fgets(line, sizeof(line), fp);) {

-	    num = sscanf(line, "%s 0x%x 0x%x %100s %100s %100s\n",

-			 ip, &type, &flags, hwa, mask, dev);

-	    if (num < 4)

+	for (num = 0; num < entries; num++) {

+	    fgets(line, sizeof(line), fp);

+	    if (sscanf(line, "%s 0x%x 0x%x %100s %100s %100s\n",

+			 ip, &type, &flags, hwa, mask, dev) < 4)

 		break;

-	    entries++;

 	    /* if the user specified hw-type differs, skip it */

 	    if (hw_set && (type != hw->type))

 		continue;