Wildcard IPv6 dhcp-range.

CHANGELOG

@@ -41,6 +41,10 @@ version 2.64
 	    configured with --listen-address. Thanks to
 	    Gene Czarcinski for sorting this out. 
 
+	    Add a "wildcard" dhcp-range which works for any IPv6
+	    subnet, --dhcp-range=::,static Useful for Stateless 
+	    DHCPv6. Thanks to Vladislav Grishenko for the patch.
+
 	    
 version 2.63
             Do duplicate dhcp-host address check in --test mode.

src/dhcp6.c

@@ -126,18 +126,25 @@ void dhcp6_packet(time_t now)
     if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
       return;
  
-  /* unlinked contexts are marked by context->current == context */
+  parm.current = NULL;
+  parm.ind = if_index;
+  parm.addr_match = 0;
+  memset(&parm.fallback, 0, IN6ADDRSZ);
+
   for (context = daemon->dhcp6; context; context = context->next)
+    if (IN6_IS_ADDR_UNSPECIFIED(&context->start6) && context->prefix == 0)
       {
+	/* wildcard context for DHCP-stateless only */
+	parm.current = context;
+	context->current = NULL;
+      }
+    else
+      {
+	/* unlinked contexts are marked by context->current == context */
 	context->current = context;
 	memset(&context->local6, 0, IN6ADDRSZ);
       }
   
-  parm.current = NULL;
-  parm.ind = if_index;
-  parm.addr_match = 0;
-  memset(&parm.fallback, 0, IN6ADDRSZ);
-  
   if (!iface_enumerate(AF_INET6, &parm, complete_context6))
     return;
   

src/option.c

@@ -2116,6 +2116,10 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    new->prefix = 64; /* default */
 	    new->end6 = new->start6;
 	    
+	    /* dhcp-range=:: enables DHCP stateless on any interface */
+	    if (IN6_IS_ADDR_UNSPECIFIED(&new->start6))
+	      new->prefix = 0;
+	    
 	    for (leasepos = 1; leasepos < k; leasepos++)
 	      {
 		if (strcmp(a[leasepos], "static") == 0)