iptables: Fix rule insertion in a builtin chain

diff --git a/src/iptables.c b/src/iptables.c
index ed52bf2..80f63ec 100644 (file)
--- a/src/iptables.c
+++ b/src/iptables.c
@@ -696,7 +696,10 @@ static int iptables_insert_rule(struct connman_iptables *table,
        if (new_entry == NULL)
                return -EINVAL;
 
-       ret = iptables_add_entry(table, new_entry, chain_head->next, builtin);
+       if (builtin == -1)
+               chain_head = chain_head->next;
+
+       ret = iptables_add_entry(table, new_entry, chain_head, builtin);
        if (ret < 0)
                g_free(new_entry);