2 files changed, 11 insertions, 3 deletions
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 2eab5cb2..49bf9519 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -77,6 +77,7 @@ krt_io_init(void)
   krt_pool = rp_new(&root_pool, "Kernel Syncer");
   krt_filter_lp = lp_new(krt_pool, 4080);
   init_list(&krt_proto_list);
+  krt_sys_io_init();
 }
 
 /*
@@ -1126,7 +1127,11 @@ krt_start(struct proto *P)
   krt_learn_init(p);
 #endif
 
-  krt_sys_start(p);
+  if (!krt_sys_start(p))
+  {
+    rem_node(&p->krt_node);
+    return PS_START;
+  }
 
   krt_scan_timer_start(p);
 
@@ -1150,8 +1155,10 @@ krt_shutdown(struct proto *P)
   p->ready = 0;
   p->initialized = 0;
 
-  krt_sys_shutdown(p);
+  if (p->p.proto_state == PS_START)
+    return PS_DOWN;
 
+  krt_sys_shutdown(p);
   rem_node(&p->krt_node);
 
   return PS_DOWN;
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 9d5d4e8c..aea20102 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -119,8 +119,9 @@ struct proto_config * krt_init_config(int class);
 
 /* krt sysdep */
 
+void krt_sys_io_init(void);
 void krt_sys_init(struct krt_proto *);
-void krt_sys_start(struct krt_proto *);
+int krt_sys_start(struct krt_proto *);
 void krt_sys_shutdown(struct krt_proto *);
 int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);