open5gs: Fix GTP-U addr binding

Change-Id: I8c91a9c4a07f4229cb4ae9af61d94e720d81a961
diff --git a/src/osmo_gsm_tester/templates/open5gs-upfd.yaml.tmpl b/src/osmo_gsm_tester/templates/open5gs-upfd.yaml.tmpl
index 757c0ec..55b78f6 100644
--- a/src/osmo_gsm_tester/templates/open5gs-upfd.yaml.tmpl
+++ b/src/osmo_gsm_tester/templates/open5gs-upfd.yaml.tmpl
@@ -107,8 +107,8 @@
     pfcp:
       - addr: ${epc.addr_upf}
     gtpu:
-      - addr: ${epc.run_addr}
-        port: 2154
+      - addr: ${epc.addr_upf}
+        port: 2152
     subnet:
       - addr: ${epc.tun_addr}/${epc.tun_netmask}
         dnn: ${epc.apn_name}