commit 9ea46b355f5238627039ed96d87835e9ed48fcc9
Author: Ryota Ozaki <ozaki-r@iij.ad.jp>
Date:   Mon Dec 12 18:19:49 2016 +0900

    Ignore local routes as well as static routes

diff --git a/sbin/routed/table.c b/sbin/routed/table.c
index d05f213..2d39596 100644
--- a/sbin/routed/table.c
+++ b/sbin/routed/table.c
@@ -778,6 +778,7 @@ static struct khash {
 #define	    KS_DYNAMIC	0x080		/* result of redirect */
 #define	    KS_DELETED	0x100		/* already deleted from kernel */
 #define	    KS_CHECK	0x200
+#define	    KS_LOCAL	0x400
 	time_t	k_keep;
 #define	    K_KEEP_LIM	30
 	time_t	k_redirect_time;	/* when redirected route 1st seen */
@@ -924,11 +925,13 @@ rtm_add(struct rt_msghdr *rtm,
 	}
 	k->k_state &= ~(KS_DELETE | KS_ADD | KS_CHANGE | KS_DEL_ADD
 			| KS_DELETED | KS_GATEWAY | KS_STATIC
-			| KS_NEW | KS_CHECK);
+			| KS_NEW | KS_CHECK | KS_LOCAL);
 	if (rtm->rtm_flags & RTF_GATEWAY)
 		k->k_state |= KS_GATEWAY;
 	if (rtm->rtm_flags & RTF_STATIC)
 		k->k_state |= KS_STATIC;
+	if (rtm->rtm_flags & RTF_LOCAL)
+		k->k_state |= KS_LOCAL;
 
 	if (0 != (rtm->rtm_flags & (RTF_DYNAMIC | RTF_MODIFIED))) {
 		if (INFO_AUTHOR(info) != 0
@@ -964,7 +967,7 @@ rtm_add(struct rt_msghdr *rtm,
 	/* If it is not a static route, quit until the next comparison
 	 * between the kernel and daemon tables, when it will be deleted.
 	 */
-	if (!(k->k_state & KS_STATIC)) {
+	if (!(k->k_state & KS_STATIC) && !(k->k_state & KS_LOCAL)) {
 		k->k_state |= KS_DELETE;
 		LIM_SEC(need_kern, k->k_keep);
 		return;
@@ -1363,7 +1366,7 @@ kern_out(struct ag_info *ag)
 		return;
 	}
 
-	if (k->k_state & KS_STATIC)
+	if ((k->k_state & KS_STATIC) || (k->k_state & KS_LOCAL))
 		return;
 
 	/* modify existing kernel entry if necessary */
@@ -1512,6 +1515,12 @@ fix_kern(void)
 				continue;
 			}
 
+			/* Do not touch local routes */
+			if (k->k_state & KS_LOCAL) {
+				pk = &k->k_next;
+				continue;
+			}
+
 			/* check hold on routes deleted by the operator */
 			if (k->k_keep > now.tv_sec) {
 				/* ensure we check when the hold is over */