diff --git a/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl b/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
index dd27da0..60f04cc 100644
--- a/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/osmo-bsc.cfg.tmpl
@@ -21,6 +21,8 @@
  asp asp0 2905 0 m3ua
   local-ip ${bsc.ip_address.addr}
   remote-ip ${stp.ip_address.addr}
+  role asp
+  sctp-role client
  as as0 m3ua
   asp asp0
   routing-key 2 0.0.2
diff --git a/src/osmo_gsm_tester/templates/osmo-sgsn.cfg.tmpl b/src/osmo_gsm_tester/templates/osmo-sgsn.cfg.tmpl
index 5d8ba90..825298d 100644
--- a/src/osmo_gsm_tester/templates/osmo-sgsn.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/osmo-sgsn.cfg.tmpl
@@ -18,6 +18,8 @@
 ! asp asp-clnt-OsmoSGSN-A 2905 0 m3ua
 !  local-ip ${sgsn.ip_address.addr}
 !  remote-ip stp.ip_address.addr
+!  role asp
+!  sctp-role client
 ! as as-clnt-OsmoSGSN-A m3ua
 !  asp asp-clnt-OsmoSGSN-A
 !  routing-key 3 0.23.4