[src/trunk]: src/sys/netinet Default netmask to /32 for INET on POINTOPOINT l...

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/044ffb88689f
branches:  trunk
changeset: 348035:044ffb88689f
user:      roy <roy%NetBSD.org@localhost>
date:      Sat Oct 01 17:17:20 2016 +0000

description:
Default netmask to /32 for INET on POINTOPOINT links if not specified.

diffstat:

 sys/netinet/in.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r 5f764fdf27b3 -r 044ffb88689f sys/netinet/in.c
--- a/sys/netinet/in.c  Sat Oct 01 15:35:22 2016 +0000
+++ b/sys/netinet/in.c  Sat Oct 01 17:17:20 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in.c,v 1.185 2016/09/29 15:18:18 roy Exp $     */
+/*     $NetBSD: in.c,v 1.186 2016/10/01 17:17:20 roy Exp $     */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -91,7 +91,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.185 2016/09/29 15:18:18 roy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.186 2016/10/01 17:17:20 roy Exp $");
 
 #include "arp.h"
 
@@ -1122,7 +1122,9 @@
        in_ifaddlocal(&ia->ia_ifa);
 
        i = ia->ia_addr.sin_addr.s_addr;
-       if (IN_CLASSA(i))
+       if (ifp->if_flags & IFF_POINTOPOINT)
+               ia->ia_netmask = INADDR_BROADCAST;      /* default to /32 */
+       else if (IN_CLASSA(i))
                ia->ia_netmask = IN_CLASSA_NET;
        else if (IN_CLASSB(i))
                ia->ia_netmask = IN_CLASSB_NET;