ip6 functionality.

git-svn-id: file:///svn/unbound/trunk@376 be551aaa-1e26-0410-a405-d3ace91eadb9

doc/Changelog

@@ -13,6 +13,9 @@
 	  VERB_ALGO, verbosity: 3 gives extensive output.
 	- fixup RA bit in cached replies.
 	- fixup CNAME responses from the cache no longer partial response.
+	- error in network send handled without leakage.
+	- enable ip6 from config, and try ip6 addresses if available,
+	  if ip6 is not connected, skips to next server.
 
 5 June 2007: Wouter
 	- iterator state finished.

iterator/iter_utils.c

@@ -80,7 +80,7 @@ iter_apply_cfg(struct iter_env* iter_env, struct config_file* cfg)
 		log_err("Could not set root or stub hints");
 		return 0;
 	}
-	
+	iter_env->supports_ipv6 = cfg->do_ip6;
 
 	/* forwarder address */
 	if(cfg->fwd_address && cfg->fwd_address[0]) {
@@ -196,7 +196,7 @@ iter_server_selection(struct iter_env* iter_env,
 	}
 	if(!a)  /* robustness */
 		return NULL;
-	/* remove it from list */
+	/* remove it from the delegation point result list */
 	if(prev)
 		prev->next_result = a->next_result;
 	else	dp->result_list = a->next_result;

iterator/iterator.c

@@ -1083,8 +1083,9 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 		qstate->query_flags, 1, &target->addr, target->addrlen, 
 		qstate);
 	if(!outq) {
-		log_err("out of memory sending query to auth server");
-		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
+		log_err("error sending query to auth server; skip this address");
+		log_addr("error for address:", &target->addr, target->addrlen);
+		return next_state(qstate, iq, QUERYTARGETS_STATE);
 	}
 	outbound_list_insert(&iq->outlist, outq);
 	iq->num_current_queries++;

services/outside_network.c

@@ -1138,6 +1138,8 @@ outnet_serviced_query(struct outside_network* outnet,
 		}
 		/* perform first network action */
 		if(!serviced_udp_send(sq, buff)) {
+			(void)rbtree_delete(outnet->serviced, sq);
+			free(sq->qbuf);
 			free(sq);
 			free(cb);
 			return NULL;