--- rtp.c	2004-07-07 22:10:34.000000000 +0200
+++ rtp.bak	2004-07-07 22:11:12.000000000 +0200
@@ -50,6 +50,7 @@
 
 static int dtmftimeout = 3000;	/* 3000 samples */
 
+static struct sockaddr_in bindaddr;
 static int rtpstart = 0;
 static int rtpend = 0;
 
@@ -814,6 +815,9 @@
 	x = (rand() % (rtpend-rtpstart)) + rtpstart;
 	x = x & ~1;
 	startplace = x;
+	
+	memcpy(&rtp->us.sin_addr, &bindaddr.sin_addr, sizeof(rtp->us.sin_addr));
+
 	for (;;) {
 		/* Must be an even port number by RTP spec */
 		rtp->us.sin_port = htons(x);
@@ -1479,7 +1483,12 @@
 void ast_rtp_reload(void)
 {
 	struct ast_config *cfg;
+	struct hostent *hp;
+	struct ast_hostent ahp;
 	char *s;
+	
+	memset(&bindaddr, 0, sizeof(bindaddr));
+
 	rtpstart = 5000;
 	rtpend = 31000;
 	cfg = ast_load("rtp.conf");
@@ -1498,6 +1507,15 @@
 			if (rtpend > 65535)
 				rtpend = 65535;
 		}
+		if ((s = ast_variable_retrieve(cfg,"general","bindaddr"))) {
+                        if (!(hp = ast_gethostbyname(s, &ahp))) {
+                                ast_log(LOG_WARNING, "Invalid address: %s\n", s);
+                        } else {
+                                memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
+				if (option_verbose > 2)
+                                	ast_log(LOG_NOTICE, "Setting RTP address to %s\n", s);
+                        }
+		}
 		ast_destroy(cfg);
 	}
 	if (rtpstart >= rtpend) {