ipacm: Fix XLAT mux id issue

When XLAT is enabled, mux_id will not be configured. Make
changes to use xlat_mux_id to configure the metadata in PDN
table.

Change-Id: Ic1646bbc4ff66e3f4911098041d2dfaf0670950d
diff --git a/ipacm/src/IPACM_ConntrackListener.cpp b/ipacm/src/IPACM_ConntrackListener.cpp
index 29a70b9..d6289e3 100644
--- a/ipacm/src/IPACM_ConntrackListener.cpp
+++ b/ipacm/src/IPACM_ConntrackListener.cpp
@@ -345,10 +345,13 @@
 void IPACM_ConntrackListener::TriggerWANUp(void *in_param)
 {
 	 ipacm_event_iface_up *wanup_data = (ipacm_event_iface_up *)in_param;
+	 uint8_t mux_id;
 
 	 IPACMDBG_H("Recevied below information during wanup,\n");
-	 IPACMDBG_H("if_name:%s, ipv4_address:0x%x\n",
-						wanup_data->ifname, wanup_data->ipv4_addr);
+	 IPACMDBG_H("if_name:%s, ipv4_address:0x%x mux_id:%d, xlat_mux_id:%d\n",
+						wanup_data->ifname, wanup_data->ipv4_addr,
+						wanup_data->mux_id,
+						wanup_data->xlat_mux_id);
 
 	 if(wanup_data->ipv4_addr == 0)
 	 {
@@ -373,7 +376,11 @@
 
 	 if(nat_inst != NULL)
 	 {
-		 nat_inst->AddTable(wanup_data->ipv4_addr, wanup_data->mux_id);
+		 if (wanup_data->mux_id == 0)
+		   mux_id = wanup_data->xlat_mux_id;
+		 else
+		   mux_id = wanup_data->mux_id;
+		 nat_inst->AddTable(wanup_data->ipv4_addr, mux_id);
 	 }
 
 	 IPACMDBG("creating nat threads\n");