Don't attach to unconfigured interfaces

diff --git a/common/dispatch.c b/common/dispatch.c
index 92546947a300763f62456bd7eb8dd8b4c2dc3518..f2803c3369e7bae28b30f6ebe41d040c794acab7 100644 (file)
--- a/common/dispatch.c
+++ b/common/dispatch.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: dispatch.c,v 1.21 1996/08/30 23:41:07 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: dispatch.c,v 1.22 1996/09/02 21:15:17 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -120,12 +120,12 @@ void discover_interfaces ()
                        error ("Can't get interface flags for %s: %m",
                               ifr.ifr_name);
 
-               /* Skip loopback and point-to-point interfaces. */
+               /* Skip loopback, point-to-point and down interfaces. */
                if ((ifr.ifr_flags & IFF_LOOPBACK) ||
-                   (ifr.ifr_flags & IFF_POINTOPOINT))
+                   (ifr.ifr_flags & IFF_POINTOPOINT) ||
+                   !(ifr.ifr_flags & IFF_UP))
                        continue;
                
-
                /* See if we've seen an interface that matches this one. */
                for (tmp = interfaces; tmp; tmp = tmp -> next)
                        if (!strcmp (tmp -> name, ifp -> ifr_name))

diff --git a/dispatch.c b/dispatch.c
index 92546947a300763f62456bd7eb8dd8b4c2dc3518..f2803c3369e7bae28b30f6ebe41d040c794acab7 100644 (file)
--- a/dispatch.c
+++ b/dispatch.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: dispatch.c,v 1.21 1996/08/30 23:41:07 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: dispatch.c,v 1.22 1996/09/02 21:15:17 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -120,12 +120,12 @@ void discover_interfaces ()
                        error ("Can't get interface flags for %s: %m",
                               ifr.ifr_name);
 
-               /* Skip loopback and point-to-point interfaces. */
+               /* Skip loopback, point-to-point and down interfaces. */
                if ((ifr.ifr_flags & IFF_LOOPBACK) ||
-                   (ifr.ifr_flags & IFF_POINTOPOINT))
+                   (ifr.ifr_flags & IFF_POINTOPOINT) ||
+                   !(ifr.ifr_flags & IFF_UP))
                        continue;
                
-
                /* See if we've seen an interface that matches this one. */
                for (tmp = interfaces; tmp; tmp = tmp -> next)
                        if (!strcmp (tmp -> name, ifp -> ifr_name))