--- /usr/ports/security/openssh-portable/files/patch-openbsd-compat_port-net.c	(nonexistent)
+++ /usr/ports/security/openssh-portable/files/patch-openbsd-compat_port-net.c	(working copy)
@@ -0,0 +1,21 @@ 
+--- openbsd-compat/port-net.c
++++ openbsd-compat/port-net.c
+@@ -185,7 +185,7 @@ sys_tun_open(int tun, int mode, char **ifname)
+	else
+ 		debug("%s: %s mode %d fd %d", __func__, ifr.ifr_name, mode, fd);
+ 
+-	if (ifname != NULL && (*ifname = strdup(ifr.ifr_name)))
++	if (ifname != NULL && (*ifname = strdup(ifr.ifr_name)) == NULL)
+ 		goto failed;
+ 
+ 	return (fd);
+@@ -272,7 +272,7 @@ sys_tun_open(int tun, int mode, char **ifname)
+ 		goto failed;
+ 	}
+ 
+-	if (ifname != NULL && (*ifname = strdup(ifr.ifr_name)))
++	if (ifname != NULL && (*ifname = strdup(ifr.ifr_name)) == NULL)
+ 		goto failed;
+ 
+ 	close(sock);
+