diff --git a/ttcn3/suites/ttcn3_bts_tests/scripts/run_ttcn3_docker.sh b/ttcn3/suites/ttcn3_bts_tests/scripts/run_ttcn3_docker.sh
index df8dcb2..daac3e0 100755
--- a/ttcn3/suites/ttcn3_bts_tests/scripts/run_ttcn3_docker.sh
+++ b/ttcn3/suites/ttcn3_bts_tests/scripts/run_ttcn3_docker.sh
@@ -3,8 +3,9 @@
 
 RUNDIR="$1"
 JUNIT_TTCN3_DST_FILE="$2"
-L2_SOCKET_PATH="$3"
-PCU_SOCKET_PATH="$4"
+BSC_RSL_ADDR="$3"
+L2_SOCKET_PATH="$4"
+PCU_SOCKET_PATH="$5"
 
 # Absolute path to this script
 SCRIPT=$(readlink -f "$0")
@@ -27,7 +28,7 @@
 network_create() {
 	NET=$1
 	echo Creating network $NET_NAME
-	docker network create --internal --subnet $NET $NET_NAME
+	docker network create --subnet $NET $NET_NAME
 }
 
 network_remove() {
@@ -70,6 +71,7 @@
 fi
 docker run	--rm \
 		--network $NET_NAME --ip 172.18.9.10 \
+		-p ${BSC_RSL_ADDR}:3003:3003 \
 		-e "TTCN3_PCAP_PATH=/data" \
 		--mount type=bind,source=$VOL_BASE_DIR/bts-tester,destination=/data \
 		--mount type=bind,source="$(dirname "$L2_SOCKET_PATH")",destination=/data/unix_l2 \
diff --git a/ttcn3/suites/ttcn3_bts_tests/suite.conf b/ttcn3/suites/ttcn3_bts_tests/suite.conf
index 1eb0a02..2bb0cac 100644
--- a/ttcn3/suites/ttcn3_bts_tests/suite.conf
+++ b/ttcn3/suites/ttcn3_bts_tests/suite.conf
@@ -1,6 +1,6 @@
 resources:
   ip_address:
-  - times: 7 # msc, bsc, hlr, stp, mgw, sgsn, ggsn
+  - times: 8 # msc, bsc, hlr, stp, mgw, sgsn, ggsn
   bts:
   - times: 1
   osmocon_phone:
diff --git a/ttcn3/suites/ttcn3_bts_tests/ttcn3_bts_tests.py b/ttcn3/suites/ttcn3_bts_tests/ttcn3_bts_tests.py
index f36b023..2684bf7 100755
--- a/ttcn3/suites/ttcn3_bts_tests/ttcn3_bts_tests.py
+++ b/ttcn3/suites/ttcn3_bts_tests/ttcn3_bts_tests.py
@@ -30,7 +30,8 @@
 msc_dummy.start()
 mgw_dummy.start()
 
-bsc.set_rsl_ip('172.18.9.10')
+nat_rsl_ip = suite.ip_address().get('addr')
+bsc.set_rsl_ip(nat_rsl_ip)
 bsc.bts_add(bts)
 sgsn_dummy.bts_add(bts)
 
@@ -52,7 +53,7 @@
 else: # PCU unix socket not available locally
     pcu_available = False
     pcu_sk = ''
-docker_cmd = (script_file, str(script_run_dir), junit_ttcn3_dst_file, osmocon.l2_socket_path(), pcu_sk)
+docker_cmd = (script_file, str(script_run_dir), junit_ttcn3_dst_file, nat_rsl_ip, osmocon.l2_socket_path(), pcu_sk)
 
 print('Creating template')
 mytemplate = Template(filename=bts_tmpl_file)