diff -ur ./include/freeradius-client.h /tmp/freeradius-client-1.1.6/include/freeradius-client.h
--- ./include/freeradius-client.h	2008-02-11 08:54:23.000000000 +0200
+++ /tmp/freeradius-client-1.1.6/include/freeradius-client.h	2010-02-03 14:19:24.333594507 +0200
@@ -420,7 +420,7 @@
 void rc_avpair_free(VALUE_PAIR *);
 int rc_avpair_parse(const rc_handle *, char *, VALUE_PAIR **);
 int rc_avpair_tostr(const rc_handle *, VALUE_PAIR *, char *, int, char *, int);
-char *rc_avpair_log(rc_handle *, VALUE_PAIR *);
+char *rc_avpair_log(rc_handle *, VALUE_PAIR *, char *buf, size_t buf_len);
 VALUE_PAIR *rc_avpair_readin(const rc_handle *, FILE *);
 
 /*	buildreq.c		*/
diff -ur ./lib/avpair.c /tmp/freeradius-client-1.1.6/lib/avpair.c
--- ./lib/avpair.c	2008-01-09 09:05:11.000000000 +0200
+++ /tmp/freeradius-client-1.1.6/lib/avpair.c	2010-02-03 14:20:09.019457941 +0200
@@ -726,18 +726,16 @@
  * Function: rc_avpair_log
  *
  * Purpose: format sequence of attribute value pairs into printable
- * string. The string is dynamically allocated and is automatically
- * freed when rc_handle is destroyed or rc_avpair_log() is called
- * again.
+ * string. The caller should provide a storage buffer and the buffer length.
+ * Returns pointer to provided storage buffer.
  *
  */
 char *
-rc_avpair_log(rc_handle *rh, VALUE_PAIR *pair)
+rc_avpair_log(rc_handle *rh, VALUE_PAIR *pair, char *buf, size_t buf_len)
 {
 	size_t len, nlen;
 	VALUE_PAIR *vp;
 	char name[33], value[256];
-	char *cp;
 
 	len = 0;
 	for (vp = pair; vp != NULL; vp = vp->next) {
@@ -745,16 +743,12 @@
 		    sizeof(value)) == -1)
 		        return NULL;
 		nlen = len + 32 + 3 + strlen(value) + 2 + 2;
-		cp = realloc(rh->ppbuf, nlen);
-		if (cp == NULL) {
-			rc_log(LOG_ERR, "rc_avpair_log: can't allocate memory");
-			return NULL;
-		}
-		sprintf(cp + len, "%-32s = '%s'\n", name, value);
-		rh->ppbuf = cp;
+		if(nlen<buf_len-1) {
+			sprintf(buf + len, "%-32s = '%s'\n", name, value);
+		} else return buf;
 		len = nlen - 1;
 	}
-	return (len > 0) ? rh->ppbuf : NULL;
+	return buf;
 }
 
 /*
diff -ur ./src/radiusclient.c /tmp/freeradius-client-1.1.6/src/radiusclient.c
--- ./src/radiusclient.c	2007-01-06 22:15:36.000000000 +0200
+++ /tmp/freeradius-client-1.1.6/src/radiusclient.c	2010-02-03 14:18:14.382459597 +0200
@@ -34,6 +34,8 @@
 
 #include <freeradius-client.h>
 
+#define BUF_LEN 4096
+
 int process(void *, VALUE_PAIR *, int, int);
 
 static void
@@ -163,13 +165,14 @@
 {
     VALUE_PAIR *received;
     char msg[4096];
+    char buf[BUF_LEN];
     int i;
 
     received = NULL;
     if (acct == 0) {
         i = rc_auth(rh, nas_port, send, &received, msg);
         if (received != NULL) {
-            printf("%s", rc_avpair_log(rh, received));
+            printf("%s", rc_avpair_log(rh, received, buf, BUF_LEN));
             rc_avpair_free(received);
         }
     } else {