diff --git a/pimd/pim_util.h b/pimd/pim_util.h
new file mode 100644
index 0000000..0fcdce0
--- /dev/null
+++ b/pimd/pim_util.h
@@ -0,0 +1,41 @@
+/*
+  PIM for Quagga
+  Copyright (C) 2008  Everton da Silva Marques
+
+  This program 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 2 of the License, or
+  (at your option) any later version.
+
+  This program 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 this program; see the file COPYING; if not, write to the
+  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+  MA 02110-1301 USA
+  
+  $QuaggaId: $Format:%an, %ai, %h$ $
+*/
+
+#ifndef PIM_UTIL_H
+#define PIM_UTIL_H
+
+#include <stdint.h>
+
+#include <zebra.h>
+
+#include "checksum.h"
+
+uint8_t igmp_msg_encode16to8(uint16_t value);
+uint16_t igmp_msg_decode8to16(uint8_t code);
+
+#ifdef PIM_USE_QUAGGA_INET_CHECKSUM
+#define pim_inet_checksum(buf,size) in_cksum(buf,size)
+#else
+uint16_t pim_inet_checksum(const char *buf, int size);
+#endif /* PIM_USE_QUAGGA_INET_CHECKSUM */
+
+#endif /* PIM_UTIL_H */