diff --git a/srsenb/hdr/stack/enb_stack_lte.h b/srsenb/hdr/stack/enb_stack_lte.h
index 925c64f5e..94d970b63 100644
--- a/srsenb/hdr/stack/enb_stack_lte.h
+++ b/srsenb/hdr/stack/enb_stack_lte.h
@@ -38,6 +38,7 @@ namespace srsenb {
 class enb_stack_lte final : public enb_stack_base,
                             public stack_interface_phy_lte,
                             public stack_interface_phy_nr,
+                            public pdcp_interface_gtpu,
                             public srsran::thread
 {
 public:
@@ -132,6 +133,10 @@ public:
   }
   void rach_detected(const rach_info_t& rach_info) override { mac_nr.rach_detected(rach_info); }
 
+  // pdcp_interface_gtpu
+  void write_sdu(uint16_t rnti, uint32_t lcid, srsran::unique_byte_buffer_t sdu, int pdcp_sn = -1) override;
+  std::map<uint32_t, srsran::unique_byte_buffer_t> get_buffered_pdus(uint16_t rnti, uint32_t lcid) override;
+
 private:
   static const int STACK_MAIN_THREAD_PRIO = 4;
   // thread loop
diff --git a/srsenb/src/stack/enb_stack_lte.cc b/srsenb/src/stack/enb_stack_lte.cc
index e936d3a79..14e231dcb 100644
--- a/srsenb/src/stack/enb_stack_lte.cc
+++ b/srsenb/src/stack/enb_stack_lte.cc
@@ -187,7 +187,7 @@ int enb_stack_lte::init(const stack_args_t& args_, const rrc_cfg_t& rrc_cfg_)
   gtpu_args.mme_addr                     = args.s1ap.mme_addr;
   gtpu_args.gtp_bind_addr                = args.s1ap.gtp_bind_addr;
   gtpu_args.indirect_tunnel_timeout_msec = args.gtpu_indirect_tunnel_timeout_msec;
-  if (gtpu.init(gtpu_args, &pdcp) != SRSRAN_SUCCESS) {
+  if (gtpu.init(gtpu_args, this) != SRSRAN_SUCCESS) {
     stack_logger.error("Couldn't initialize GTPU");
     return SRSRAN_ERROR;
   }
@@ -278,4 +278,17 @@ void enb_stack_lte::run_thread()
   }
 }
 
+void enb_stack_lte::write_sdu(uint16_t                     rnti,
+                              uint32_t                     lcid /* to be replaced with eps_bearer_id */,
+                              srsran::unique_byte_buffer_t sdu,
+                              int                          pdcp_sn)
+{
+  pdcp.write_sdu(rnti, lcid, std::move(sdu), pdcp_sn);
+}
+
+std::map<uint32_t, srsran::unique_byte_buffer_t> enb_stack_lte::get_buffered_pdus(uint16_t rnti, uint32_t lcid)
+{
+  return pdcp.get_buffered_pdus(rnti, lcid);
+}
+
 } // namespace srsenb