--- netfilter-extensions/helpers/pptp/ip_nat_pptp.c	4 Jul 2003 19:05:57 -0000	1.4
+++ netfilter-extensions/helpers/pptp/ip_nat_pptp.c	22 Sep 2003 04:41:46 -0000
@@ -170,7 +170,7 @@
 			/* save original call ID in nat_info */
 			nat_pptp_info->pns_call_id = ct_pptp_info->pns_call_id;
 
-			new_callid = tcph->source;
+			new_callid = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.tcp.port;
 			/* save new call ID in ct info */
 			ct_pptp_info->pns_call_id = ntohs(new_callid);
 			break;