We need to track the auto prefix in ra_prefix_conf otherwise we can't

configure its options. Trying so lead to a crash.
Found the hard way by & OK sthen

diff --git a/usr.sbin/rad/parse.y b/usr.sbin/rad/parse.y
index 322f0e7..70c3819 100644 (file)
--- a/usr.sbin/rad/parse.y
+++ b/usr.sbin/rad/parse.y
@@ -1,4 +1,4 @@
-/*     $OpenBSD: parse.y,v 1.4 2018/07/20 13:17:02 florian Exp $       */
+/*     $OpenBSD: parse.y,v 1.5 2018/07/20 17:48:58 florian Exp $       */
 
 /*
  * Copyright (c) 2018 Florian Obser <florian@openbsd.org>
@@ -243,8 +243,9 @@ ra_ifaceoptsl       : NO AUTO PREFIX {
                }
                | AUTO PREFIX {
                        if (ra_iface_conf->autoprefix == NULL)
-                               ra_iface_conf->autoprefix = 
-                       ra_prefix_conf = conf_get_ra_prefix(NULL, 0);
+                               ra_iface_conf->autoprefix =
+                                   conf_get_ra_prefix(NULL, 0);
+                       ra_prefix_conf = ra_iface_conf->autoprefix;
                } ra_prefix_block {
                        ra_prefix_conf = NULL;
                }