Add constructor-noauth: keyword

src/auth.c

@@ -54,6 +54,7 @@ static int filter_constructed_dhcp(struct auth_zone *zone, int flag, struct all_
   if (flag & F_IPV6)
     for (context = daemon->dhcp6; context; context = context->next)
       if ((context->flags & CONTEXT_CONSTRUCTED) &&
+	  !(context->flags & CONTEXT_NOAUTH) &&
 	  is_same_net6(&(addr_u->addr.addr6), &context->start6, context->prefix))
 	return 1;
 #endif

src/dnsmasq.h

@@ -731,6 +731,7 @@ struct dhcp_context {
 #define CONTEXT_RA          8192
 #define CONTEXT_CONF_USED  16384
 #define CONTEXT_USED       32768
+#define CONTEXT_NOAUTH     65536
 
 struct ping_result {
   struct in_addr addr;

src/option.c

@@ -2409,6 +2409,11 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		    new->template_interface = opt_string_alloc(a[leasepos] + 12);
 		    new->flags |= CONTEXT_TEMPLATE;
 		  }
+		else if (strstr(a[leasepos], "constructor-noauth:") == a[leasepos])
+		  {
+		    new->template_interface = opt_string_alloc(a[leasepos] + 19);
+		    new->flags |= CONTEXT_TEMPLATE | CONTEXT_NOAUTH;
+		  }
 		else  
 		  break;
 	      }