eNB thread isn't created in case of L2 FAPI simulator.

targets/RT/USER/lte-enb.c

@@ -968,6 +968,10 @@ void init_eNB_proc(int inst) {
       pthread_create( &proc_rxtx[0].pthread_rxtx, attr0, eNB_thread_rxtx, proc );
       pthread_create( &proc_rxtx[1].pthread_rxtx, attr1, tx_thread, proc);
     }
+    if (nfapi_mode == 2) {
+      pthread_create( &proc_rxtx[0].pthread_rxtx, attr0, eNB_thread_rxtx, &proc_rxtx[0] );
+      pthread_create( &proc_rxtx[1].pthread_rxtx, attr1, eNB_thread_rxtx, &proc_rxtx[1] );
+    }
     pthread_create( &proc->pthread_prach, attr_prach, eNB_thread_prach, eNB );
 #if (RRC_VERSION >= MAKE_VERSION(14, 0, 0))
     pthread_create( &proc->pthread_prach_br, attr_prach_br, eNB_thread_prach_br, eNB );