AID_VPN_IPv4 and AID_VPN_IPv6 require a labellen that is non-zero.

OK tb@

diff --git a/usr.sbin/bgpd/rde_prefix.c b/usr.sbin/bgpd/rde_prefix.c
index a6720b0..d813003 100644 (file)
--- a/usr.sbin/bgpd/rde_prefix.c
+++ b/usr.sbin/bgpd/rde_prefix.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rde_prefix.c,v 1.51 2024/06/25 13:21:18 claudio Exp $ */
+/*     $OpenBSD: rde_prefix.c,v 1.52 2024/09/10 08:47:51 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Claudio Jeker <claudio@openbsd.org>
@@ -225,6 +225,8 @@ pt_fill(struct bgpd_addr *prefix, int prefixlen)
                pte_vpn4.prefixlen = prefixlen;
                pte_vpn4.rd = prefix->rd;
                pte_vpn4.labellen = prefix->labellen;
+               if (prefix->labellen == 0)
+                       fatalx("pt_fill: no MPLS label in VPN addr");
                memcpy(pte_vpn4.labelstack, prefix->labelstack,
                    prefix->labellen);
                return ((struct pt_entry *)&pte_vpn4);
@@ -239,6 +241,8 @@ pt_fill(struct bgpd_addr *prefix, int prefixlen)
                pte_vpn6.prefixlen = prefixlen;
                pte_vpn6.rd = prefix->rd;
                pte_vpn6.labellen = prefix->labellen;
+               if (prefix->labellen == 0)
+                       fatalx("pt_fill: no MPLS label in VPN addr");
                memcpy(pte_vpn6.labelstack, prefix->labelstack,
                    prefix->labellen);
                return ((struct pt_entry *)&pte_vpn6);