Allow a local address to be specified (so I can run two servers at once).

diff --git a/common/socket.c b/common/socket.c
index 63af96d019d783077e6e100f63c425b612930ef1..a38e5d82f29c8f6b7ddd2115f7c7a4f9fca47360 100644 (file)
--- a/common/socket.c
+++ b/common/socket.c
@@ -51,7 +51,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: socket.c,v 1.48 2000/04/06 23:56:01 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: socket.c,v 1.49 2000/05/01 23:31:49 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -117,7 +117,7 @@ int if_register_socket (info)
        /* Set up the address we're going to bind to. */
        name.sin_family = AF_INET;
        name.sin_port = local_port;
-       name.sin_addr.s_addr = INADDR_ANY;
+       name.sin_addr = local_address;
        memset (name.sin_zero, 0, sizeof (name.sin_zero));
 
        /* Make a socket... */
@@ -136,6 +136,12 @@ int if_register_socket (info)
                        (char *)&flag, sizeof flag) < 0)
                log_fatal ("Can't set SO_BROADCAST option on dhcp socket: %m");
 
+       /* Set the SO_USELOOPBACK option so that we can broadcast DHCP
+          responses. */
+       if (setsockopt (sock, SOL_SOCKET, SO_USELOOPBACK,
+                       (char *)&flag, sizeof flag) < 0)
+               log_fatal ("Can't set SO_USELOOPBACK on dhcp socket: %m");
+
        /* Bind the socket to this interface's IP address. */
        if (bind (sock, (struct sockaddr *)&name, sizeof name) < 0)
                log_fatal ("Can't bind to dhcp address: %m");