diff --git a/src/vnet/session/application_interface.h b/src/vnet/session/application_interface.h
index d76b9f7..b41f7a4 100644
--- a/src/vnet/session/application_interface.h
+++ b/src/vnet/session/application_interface.h
@@ -74,6 +74,8 @@
   /** Delegate fifo-tuning-logic to application */
   int (*fifo_tuning_callback) (session_t * s, svm_fifo_t * f,
 			       session_ft_action_t act, u32 bytes);
+  /** Custom fifo allocation for proxy */
+  int (*proxy_alloc_session_fifos) (session_t *s);
 
 } session_cb_vft_t;
 
diff --git a/src/vnet/session/application_local.c b/src/vnet/session/application_local.c
index 192c22b..e345153 100644
--- a/src/vnet/session/application_local.c
+++ b/src/vnet/session/application_local.c
@@ -379,6 +379,7 @@
   session_set_state (cs, SESSION_STATE_CONNECTING);
   cs->app_wrk_index = client_wrk->wrk_index;
   cs->connection_index = cct->c_c_index;
+  cs->opaque = opaque;
   cct->c_s_index = cs->session_index;
 
   /* This will allocate fifos for the session. They won't be used for
diff --git a/src/vnet/session/application_worker.c b/src/vnet/session/application_worker.c
index 9e4b147..a806c4a 100644
--- a/src/vnet/session/application_worker.c
+++ b/src/vnet/session/application_worker.c
@@ -406,7 +406,7 @@
 
   /* Allocate fifos for session, unless the app is a builtin proxy */
   if (application_is_builtin_proxy (app))
-    return 0;
+    return app->cb_fns.proxy_alloc_session_fifos (s);
 
   sm = app_worker_get_connect_segment_manager (app_wrk);
   return app_worker_alloc_session_fifos (sm, s);
diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index b494041..1f73eef 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -920,6 +920,7 @@
   s = session_alloc_for_connection (tc);
   session_set_state (s, SESSION_STATE_CONNECTING);
   s->app_wrk_index = app_wrk->wrk_index;
+  s->opaque = opaque;
   new_si = s->session_index;
   new_ti = s->thread_index;
 
@@ -1342,6 +1343,7 @@
   app_wrk = app_worker_get (rmt->app_wrk_index);
   s = session_alloc_for_connection (tc);
   s->app_wrk_index = app_wrk->wrk_index;
+  s->opaque = rmt->opaque;
   session_set_state (s, SESSION_STATE_OPENED);
   if (app_worker_init_connected (app_wrk, s))
     {