Author: pfg
Date: Sat May 14 23:32:03 2016
New Revision: 299784
URL: https://svnweb.freebsd.org/changeset/base/299784

Log:
  Avoid NULL de-references.
  
  CID:          271079
  Obtained from:        NetBSD
  MFC after:    2 weeks.

Modified:
  head/sbin/routed/output.c

Modified: head/sbin/routed/output.c
==============================================================================
--- head/sbin/routed/output.c   Sat May 14 23:29:41 2016        (r299783)
+++ head/sbin/routed/output.c   Sat May 14 23:32:03 2016        (r299784)
@@ -711,7 +711,7 @@ supply(struct sockaddr_in *dst,
 
        switch (type) {
        case OUT_MULTICAST:
-               if (ifp->int_if_flags & IFF_MULTICAST)
+               if (ifp != NULL && ifp->int_if_flags & IFF_MULTICAST)
                        v2buf.type = OUT_MULTICAST;
                else
                        v2buf.type = NO_OUT_MULTICAST;
@@ -757,7 +757,7 @@ supply(struct sockaddr_in *dst,
        /*  Fake a default route if asked and if there is not already
         * a better, real default route.
         */
-       if (supplier && (def_metric = ifp->int_d_metric) != 0) {
+       if (supplier && ifp && (def_metric = ifp->int_d_metric) != 0) {
                if ((rt = rtget(RIP_DEFAULT, 0)) == NULL 
                    || rt->rt_metric+ws.metric >= def_metric) {
                        ws.state |= WS_ST_DEFAULT;
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