From a2a90d6ee51a22feb72dc6c0adbb54b708a453b8 Mon Sep 17 00:00:00 2001
From: Kristof Provost <kp@FreeBSD.org>
Date: Sat, 20 Oct 2018 18:11:46 +0000
Subject: [PATCH] pfctl: Dup strings

When we set the ifname we have to copy the string, rather than just keep
the pointer.

PR:		231323
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D17507
---
 sbin/pfctl/parse.y | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sbin/pfctl/parse.y b/sbin/pfctl/parse.y
index 3b1f0bbea3dd..c542bf72f703 100644
--- a/sbin/pfctl/parse.y
+++ b/sbin/pfctl/parse.y
@@ -4408,7 +4408,7 @@ route_host	: STRING			{
 			$$ = calloc(1, sizeof(struct node_host));
 			if ($$ == NULL)
 				err(1, "route_host: calloc");
-			$$->ifname = $1;
+			$$->ifname = strdup($1);
 			set_ipmask($$, 128);
 			$$->next = NULL;
 			$$->tail = $$;
@@ -4418,7 +4418,7 @@ route_host	: STRING			{
 
 			$$ = $3;
 			for (n = $3; n != NULL; n = n->next)
-				n->ifname = $2;
+				n->ifname = strdup($2);
 		}
 		;