pfcp_peer: do not route incoming PDUs without SEID

Change-Id: I7d33ec4e883b217b2b4f65e4866d9365c32c753d
---
M src/pfcp_peer.erl
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/pfcp_peer.erl b/src/pfcp_peer.erl
index 0479071..cc98c49 100644
--- a/src/pfcp_peer.erl
+++ b/src/pfcp_peer.erl
@@ -238,8 +238,10 @@
         %% 3GPP TS 29.244, 6.2.2.2 Heartbeat Request
         #pfcp{type = heartbeat_request} ->
             recv_heartbeat_request(PDU, {FromIp, FromPort}, S);
+        #pfcp{seid = SEID} when is_integer(SEID) ->
+            route_pdu(PDU, S);
         _ ->
-            route_pdu(PDU, S)
+            ?LOG_NOTICE("Rx unexpected PFCP PDU: ~p", [PDU])
     end,
     {keep_state, S};
 

