ConnectionManager: set factory in getIceOptions

Change-Id: I736294960d8994d9455ab167e373eba23cc0ffeb
diff --git a/src/connectionmanager.cpp b/src/connectionmanager.cpp
index 52995f2..7fa8aac 100644
--- a/src/connectionmanager.cpp
+++ b/src/connectionmanager.cpp
@@ -1402,6 +1402,7 @@
 ConnectionManager::Impl::getIceOptions() const noexcept
 {
     IceTransportOptions opts;
+    opts.factory = (IceTransportFactory*)&iceFactory_;
     opts.upnpEnable = getUPnPActive();
 
     if (config_->stunEnabled)