Cope with --listen-address for not yet existent addr in bind-dynamic mode.

CHANGELOG

@@ -45,6 +45,9 @@ version 2.63
 	    uk.org.thekelleys.dnsmasq. Thanks to Mathieu
 	    Trudel-Lapierre for the patch. 
 
+	    Set the "prefix on-link" bit in Router
+	    Advertisements. Thanks to Gui Iribarren for the patch.
+
 
 version 2.62
             Update German translation. Thanks to Conrad Kostecki.

src/network.c

@@ -338,10 +338,19 @@ static int make_sock(union mysockaddr *addr, int type, int dienow)
 	sprintf(daemon->addrbuff, "port %d", port);
       s = _("failed to create listening socket for %s: %s");
       
+      if (fd != -1)
+	close (fd);
+      
       if (dienow)
-	die(s, daemon->addrbuff, EC_BADNET);
+	{
+	  /* failure to bind addresses given by --listen-address at this point
+	     is OK if we're doing bind-dynamic */
+	  if (!option_bool(OPT_CLEVERBIND))
+	    die(s, daemon->addrbuff, EC_BADNET);
+	}
+      else
+	my_syslog(LOG_WARNING, s, daemon->addrbuff, strerror(errno));
       
-      my_syslog(LOG_ERR, s, daemon->addrbuff, strerror(errno));
       return -1;
     }	
   
@@ -513,7 +522,8 @@ void create_bound_listeners(int dienow)
      no interface with a matching address. These may be valid: eg it's possible
      to listen on 127.0.1.1 even if the loopback interface is 127.0.0.1
 
-     If the address isn't valid the bind() will fail and we'll die().
+     If the address isn't valid the bind() will fail and we'll die() 
+     (except in bind-dynamic mode, when we'll complain but keep trying.)
 
      The resulting listeners have the ->iface field NULL, and this has to be
      handled by the DNS and TFTP code. It disables --localise-queries processing

src/radv.c

@@ -412,8 +412,8 @@ static int add_prefixes(struct in6_addr *local,  int prefix,
 		  opt->type = ICMP6_OPT_PREFIX;
 		  opt->len = 4;
 		  opt->prefix_len = prefix;
-		  /* autonomous only if we're not doing dhcp */
+		  /* autonomous only if we're not doing dhcp, always set "on-link" */
-		  opt->flags = do_slaac ? 0x40 : 0x00;
+		  opt->flags = do_slaac ? 0xC0 : 0x80;
 		  opt->valid_lifetime = htonl(time);
 		  opt->preferred_lifetime = htonl(deprecate ? 0 : time);
 		  opt->reserved = 0; 

src/tftp.c

@@ -113,7 +113,6 @@ void tftp_request(struct listener *listen, time_t now)
   else
     {
       struct cmsghdr *cmptr;
-      int check;
 
       if (msg.msg_controllen < sizeof(struct cmsghdr))
         return;
@@ -193,10 +192,14 @@ void tftp_request(struct listener *listen, time_t now)
 
 #ifdef HAVE_IPV6
       if (listen->family == AF_INET6)
-	check = iface_check(AF_INET6, (struct all_addr *)&addr.in6.sin6_addr, name);
+	{
+	  if (!iface_check(AF_INET6, (struct all_addr *)&addr.in6.sin6_addr, name))
+	    return;
+	}
       else
 #endif
-        check = iface_check(AF_INET, (struct all_addr *)&addr.in.sin_addr, name);
+        if (!iface_check(AF_INET, (struct all_addr *)&addr.in.sin_addr, name))
+	  return;
 
 #ifdef HAVE_DHCP      
       /* allowed interfaces are the same as for DHCP */