4 files changed, 20 insertions, 9 deletions

diff --git a/source4/nbt_server/defense.c b/source4/nbt_server/defense.c
index c59877e4b7..8d71b31c65 100644
--- a/source4/nbt_server/defense.c
+++ b/source4/nbt_server/defense.c
@@ -56,7 +56,8 @@ void nbtd_request_defense(struct nbt_name_socket *nbtsock,
 	name = &packet->questions[0].name;
 
 	iname = nbtd_find_iname(iface, name, NBT_NM_ACTIVE);
-	if (iname != NULL && !(iname->nb_flags & NBT_NM_GROUP)) {
+	if (iname != NULL && 
+	    !IS_GROUP_NAME(name, iname->nb_flags)) {
 		DEBUG(2,("Defending name %s on %s against %s\n",
 			 nbt_name_string(packet, name), 
 			 iface->bcast_address, src_address));
diff --git a/source4/nbt_server/nbt_server.h b/source4/nbt_server/nbt_server.h
index a698ebf1a0..6a7b14a546 100644
--- a/source4/nbt_server/nbt_server.h
+++ b/source4/nbt_server/nbt_server.h
@@ -79,3 +79,7 @@ struct nbtd_server {
 		return; \
 	} \
 } while (0)
+
+/* this copes with the nasty hack that is the type 0x1c name */
+#define IS_GROUP_NAME(name, nb_flags) \
+	((name)->type != NBT_NAME_LOGON && (nb_flags & NBT_NM_GROUP))
diff --git a/source4/nbt_server/winsserver.c b/source4/nbt_server/winsserver.c
index 45b147d86d..c1eed0b1fa 100644
--- a/source4/nbt_server/winsserver.c
+++ b/source4/nbt_server/winsserver.c
@@ -56,7 +56,7 @@ static uint8_t wins_register_new(struct nbt_name_socket *nbtsock,
 	rec.state         = WINS_REC_ACTIVE;
 	rec.expire_time   = time(NULL) + ttl;
 	rec.registered_by = src_address;
-	if (nb_flags & NBT_NM_GROUP) {
+	if (IS_GROUP_NAME(name, nb_flags)) {
 		rec.addresses     = str_list_make(packet, "255.255.255.255", NULL);
 	} else {
 		rec.addresses     = str_list_make(packet, address, NULL);
@@ -145,7 +145,7 @@ static void nbtd_winsserver_register(struct nbt_name_socket *nbtsock,
 
 	/* if the registration is for a group, then just update the expiry time 
 	   and we are done */
-	if (nb_flags & NBT_NM_GROUP) {
+	if (IS_GROUP_NAME(name, nb_flags)) {
 		wins_update_ttl(nbtsock, packet, rec, src_address, src_port);
 		goto done;
 	}
@@ -207,7 +207,7 @@ static void nbtd_winsserver_release(struct nbt_name_socket *nbtsock,
 	rec = winsdb_load(winssrv, name, packet);
 	if (rec == NULL || 
 	    rec->state != WINS_REC_ACTIVE || 
-	    (rec->nb_flags & NBT_NM_GROUP)) {
+	    IS_GROUP_NAME(name, rec->nb_flags)) {
 		goto done;
 	}
 
diff --git a/source4/nbt_server/winswack.c b/source4/nbt_server/winswack.c
index a15f0a7d06..190b1cdec7 100644
--- a/source4/nbt_server/winswack.c
+++ b/source4/nbt_server/winswack.c
@@ -173,11 +173,6 @@ void wins_register_wack(struct nbt_name_socket *nbtsock,
 	state->src_address     = talloc_strdup(state, src_address);
 	if (state->src_address == NULL) goto failed;
 
-	/* send a WACK to the client, specifying the maximum time it could
-	   take to check with the owner, plus some slack */
-	ttl = 5 + 4 * str_list_length(rec->addresses);
-	nbtd_wack_reply(nbtsock, packet, src_address, src_port, ttl);
-
 	/* setup a name query to the first address */
 	state->query.in.name        = *rec->name;
 	state->query.in.dest_addr   = state->owner_addresses[0];
@@ -186,6 +181,17 @@ void wins_register_wack(struct nbt_name_socket *nbtsock,
 	state->query.in.timeout     = 1;
 	state->query.in.retries     = 2;
 
+	/* the LOGON type is a nasty hack */
+	if (rec->name->type == NBT_NAME_LOGON) {
+		wins_wack_allow(state);
+		return;
+	}
+
+	/* send a WACK to the client, specifying the maximum time it could
+	   take to check with the owner, plus some slack */
+	ttl = 5 + 4 * str_list_length(rec->addresses);
+	nbtd_wack_reply(nbtsock, packet, src_address, src_port, ttl);
+
 	req = nbt_name_query_send(nbtsock, &state->query);
 	if (req == NULL) goto failed;