make sure LoopDat really is only the loop date and not {ok, LoopDat}
diff --git a/src/mgw_nat_usr.erl b/src/mgw_nat_usr.erl
index e3544be..872bab1 100644
--- a/src/mgw_nat_usr.erl
+++ b/src/mgw_nat_usr.erl
@@ -47,7 +47,7 @@
RewriteActMod:reload_config(),
SctpHdlrArgs = [MscLocalIp, MscLocalPort, MscRemoteIp,
StpRemoteIp, StpRemotePort, RewriteActMod],
- LoopDat = apply(sctp_handler, init, SctpHdlrArgs),
+ {ok, LoopDat} = apply(sctp_handler, init, SctpHdlrArgs),
{ok, {Params, LoopDat}}.
% this cast is produced by mgw_nat_sup child walker