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diff --git a/src/slist.h b/src/slist.h
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+/*
+ *  tcpproxy
+ *
+ *  tcpproxy is a simple tcp connection proxy which combines the 
+ *  features of rinetd and 6tunnel. tcpproxy supports IPv4 and 
+ *  IPv6 and also supports connections from IPv6 to IPv4 
+ *  endpoints and vice versa.
+ *  
+ *
+ *  Copyright (C) 2010-2011 Christian Pointner <equinox@spreadspace.org>
+ *                         
+ *  This file is part of tcpproxy.
+ *
+ *  tcpproxy is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  tcpproxy is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with tcpproxy. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TCPPROXY_slist_h_INCLUDED
+#define TCPPROXY_slist_h_INCLUDED
+
+struct slist_element_struct {
+  void* data_;
+  struct slist_element_struct* next_;
+};
+typedef struct slist_element_struct slist_element_t;
+
+slist_element_t* slist_get_last(slist_element_t* first);
+
+struct slist_struct {
+  void (*delete_element)(void* element);
+  slist_element_t* first_;
+};
+typedef struct slist_struct slist_t;
+
+int slist_init(slist_t* lst, void (*delete_element)(void*));
+slist_element_t* slist_add(slist_t* lst, void* data);
+void slist_remove(slist_t* lst, void* data);
+void slist_clear(slist_t* lst);
+
+#endif