Index: pf.c
===================================================================
RCS file: /cvs/src/sys/net/pf.c,v
retrieving revision 1.1101
diff -u -p -r1.1101 pf.c
--- pf.c	19 Jan 2021 22:22:23 -0000	1.1101
+++ pf.c	27 Jan 2021 01:21:24 -0000
@@ -6039,7 +6041,7 @@ pf_route(struct pf_pdesc *pd, struct pf_
 	if (ifp == NULL)
 		goto bad;
 
-	if (pd->kif->pfik_ifp != ifp) {
+	if (r->rt != PF_DUPTO && pd->kif->pfik_ifp != ifp) {
 		if (pf_test(AF_INET, PF_OUT, ifp, &m0) != PF_PASS)
 			goto bad;
 		else if (m0 == NULL)
@@ -6194,7 +6195,7 @@ pf_route6(struct pf_pdesc *pd, struct pf
 	if (ifp == NULL)
 		goto bad;
 
-	if (pd->kif->pfik_ifp != ifp) {
+	if (r->rt != PF_DUPTO && pd->kif->pfik_ifp != ifp) {
 		if (pf_test(AF_INET6, PF_OUT, ifp, &m0) != PF_PASS)
 			goto bad;
 		else if (m0 == NULL)