Index: netlist.c
===================================================================
--- netlist.c	(revision 36746)
+++ netlist.c	(revision 36747)
@@ -233,10 +233,25 @@
 	if (pn != tmp)
 		free(pn);
 	return t;
+}
 
+int pcb_net_is_term_on_net(pcb_net_t *net, pcb_net_term_t *term)
+{
+	return term->parent.net == net;
 }
 
+int pcb_net_is_term_on_net_by_name(pcb_board_t *pcb, pcb_netlist_t *nl, const char *netname, const char *termname)
+{
+	pcb_net_t *net = pcb_net_get(pcb, nl, netname, 0);
+	pcb_net_term_t *term;
 
+	if (net == NULL)
+		return -1;
+
+	term = pcb_net_term_get_by_pinname(net, termname, 0);
+	return (term != NULL);
+}
+
 int pcb_net_term_del(pcb_net_t *net, pcb_net_term_t *term)
 {
 	pcb_termlist_remove(term);
Index: netlist.h
===================================================================
--- netlist.h	(revision 36746)
+++ netlist.h	(revision 36747)
@@ -97,6 +97,11 @@
 pcb_net_t *pcb_net_get_user(pcb_board_t *pcb, pcb_netlist_t *nl, const char *name_or_rx); /* run all three above in order, until one succeeds */
 
 
+/* Check if terminal is on a specific net; returns bool 0 or 1 normally, or
+   -1 on error */
+int pcb_net_is_term_on_net(pcb_net_t *net, pcb_net_term_t *term);
+int pcb_net_is_term_on_net_by_name(pcb_board_t *pcb, pcb_netlist_t *nl, const char *netname, const char *termname);
+
 /* Remove a net from a netlist by namel returns 0 on removal, -1 on error */
 int pcb_net_del(pcb_netlist_t *nl, const char *netname);
 
Index: rats_patch.c
===================================================================
--- rats_patch.c	(revision 36746)
+++ rats_patch.c	(revision 36747)
@@ -333,8 +333,17 @@
 {
 	switch(n->op) {
 		case RATP_ADD_CONN:
+rnd_trace("add conn: id='%s' 1='%s'\n", n->id, n->arg1.net_name);
+			if (pcb_net_is_term_on_net_by_name(pcb, &pcb->netlist[PCB_NETLIST_INPUT], n->arg1.net_name, n->id) == 1) {
+				rnd_message(RND_MSG_INFO, "rats patch: 'add connection' %s to %s is done on forward annotation, removing.\n", n->id, n->arg1.net_name);
+				return 1;
+			}
 			break;
 		case RATP_DEL_CONN:
+			if (pcb_net_is_term_on_net_by_name(pcb, &pcb->netlist[PCB_NETLIST_INPUT], n->arg1.net_name, n->id) == 0) {
+				rnd_message(RND_MSG_INFO, "rats patch: 'del connection' %s to %s is done on forward annotation, removing.\n", n->id, n->arg1.net_name);
+				return 1;
+			}
 			break;
 		case RATP_CHANGE_ATTRIB:
 			break;