Index: trunk/src/libgrbs/route_remove.c
===================================================================
--- trunk/src/libgrbs/route_remove.c	(revision 1312)
+++ trunk/src/libgrbs/route_remove.c	(revision 1313)
@@ -97,7 +97,8 @@
 
 static void grbs_del_arc(grbs_t *grbs, grbs_arc_t *arc)
 {
-	gdl_remove(arc->link_2net.parent, arc, link_2net);
+	if (arc->link_2net.parent != NULL)
+		gdl_remove(arc->link_2net.parent, arc, link_2net);
 	gdl_remove(arc->link_point.parent, arc, link_point);
 	grbs_arc_free(grbs, arc);
 }
@@ -131,9 +132,8 @@
 			if (arc == first) {
 				if (sarc != NULL)
 					update_seg_sentinel_angles(sentinel, sarc);
-				else {
-#warning TODO: remove sentinel
-				}
+				else
+					grbs_del_arc(grbs, sentinel);
 			}
 
 #warning TODO