[src/trunk]: src/sys/netinet Add the local route after finishing the configur...

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

details:   https://anonhg.NetBSD.org/src/rev/01af2f75423b
branches:  trunk
changeset: 352127:01af2f75423b
user:      roy <roy%NetBSD.org@localhost>
date:      Fri Mar 17 17:26:20 2017 +0000

description:
Add the local route after finishing the configuration of the address.
This fixes the issue where the initial address announced had an
invalid broadcast address.

diffstat:

 sys/netinet/in.c |  18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diffs (56 lines):

diff -r 5b92768a2765 -r 01af2f75423b sys/netinet/in.c
--- a/sys/netinet/in.c  Fri Mar 17 16:15:11 2017 +0000
+++ b/sys/netinet/in.c  Fri Mar 17 17:26:20 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: in.c,v 1.198 2017/03/02 05:31:04 ozaki-r Exp $ */
+/*     $NetBSD: in.c,v 1.199 2017/03/17 17:26:20 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 1.198 2017/03/02 05:31:04 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.199 2017/03/17 17:26:20 roy Exp $");
 
 #include "arp.h"
 
@@ -1161,9 +1161,6 @@
                ia->ia4_flags = newflags;
        }
 
-       /* Add the local route to the address */
-       in_ifaddlocal(&ia->ia_ifa);
-
        i = ia->ia_addr.sin_addr.s_addr;
        if (ifp->if_flags & IFF_POINTOPOINT)
                ia->ia_netmask = INADDR_BROADCAST;      /* default to /32 */
@@ -1187,11 +1184,10 @@
        ia->ia_net = i & ia->ia_netmask;
        ia->ia_subnet = i & ia->ia_subnetmask;
        in_socktrim(&ia->ia_sockmask);
+
        /* re-calculate the "in_maxmtu" value */
        in_setmaxmtu();
-       /*
-        * Add route for the network.
-        */
+
        ia->ia_ifa.ifa_metric = ifp->if_metric;
        if (ifp->if_flags & IFF_BROADCAST) {
                ia->ia_broadaddr.sin_addr.s_addr =
@@ -1206,7 +1202,13 @@
                        return (0);
                flags |= RTF_HOST;
        }
+
+       /* Add the local route to the address */
+       in_ifaddlocal(&ia->ia_ifa);
+
+       /* Add the prefix route for the address */
        error = in_addprefix(ia, flags);
+
        /*
         * If the interface supports multicast, join the "all hosts"
         * multicast group on that interface.