Index: if_loop.c
===================================================================
RCS file: /cvs/src/sys/net/if_loop.c,v
diff -u -p -r1.98 if_loop.c
--- if_loop.c	29 Dec 2023 11:43:04 -0000	1.98
+++ if_loop.c	9 Oct 2024 06:10:16 -0000
@@ -261,17 +261,20 @@ looutput(struct ifnet *ifp, struct mbuf 
 	if ((m->m_flags & M_PKTHDR) == 0)
 		panic("%s: no header mbuf", __func__);
 
-	if (rt && rt->rt_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
-		m_freem(m);
-		return (rt->rt_flags & RTF_BLACKHOLE ? 0 :
-			rt->rt_flags & RTF_HOST ? EHOSTUNREACH : ENETUNREACH);
+	if (rt != NULL) {
+		if (ISSET(rt->rt_flags, RTF_BLACKHOLE)) {
+			m_freem(m);
+			return (0);
+		}
+		if (ISSET(rt->rt_flags, RTF_REJECT) ||
+		    !ISSET(rt->rt_flags, RTF_LOCAL)) {
+			m_freem(m);
+			return (ISSET(rt->rt_flags, RTF_HOST) ?
+			    EHOSTUNREACH : ENETUNREACH);
+		}
 	}
 
-	/*
-	 * Do not call if_input_local() directly.  Queue the packet to avoid
-	 * stack overflow and make TCP handshake over loopback work.
-	 */
-	return (if_output_local(ifp, m, dst->sa_family));
+	return (if_input_local(ifp, m, dst->sa_family));
 }
 
 void