diff --git a/lib/snmp.c b/lib/snmp.c
new file mode 100644
index 0000000..d7b1d95
--- /dev/null
+++ b/lib/snmp.c
@@ -0,0 +1,113 @@
+/* SNMP support
+ * Copyright (C) 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
+ */
+
+#include <zebra.h>
+
+#ifdef HAVE_SNMP
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#include "smux.h"
+
+#define min(A,B) ((A) < (B) ? (A) : (B))
+
+int
+oid_compare (oid *o1, int o1_len, oid *o2, int o2_len)
+{
+  int i;
+
+  for (i = 0; i < min (o1_len, o2_len); i++)
+    {
+      if (o1[i] < o2[i])
+	return -1;
+      else if (o1[i] > o2[i])
+	return 1;
+    }
+  if (o1_len < o2_len)
+    return -1;
+  if (o1_len > o2_len)
+    return 1;
+
+  return 0;
+}
+
+void *
+oid_copy (void *dest, const void *src, size_t size)
+{
+  return memcpy (dest, src, size * sizeof (oid));
+}
+
+void
+oid2in_addr (oid oid[], int len, struct in_addr *addr)
+{
+  int i;
+  u_char *pnt;
+  
+  if (len == 0)
+    return;
+
+  pnt = (u_char *) addr;
+
+  for (i = 0; i < len; i++)
+    *pnt++ = oid[i];
+}
+
+void
+oid_copy_addr (oid oid[], struct in_addr *addr, int len)
+{
+  int i;
+  u_char *pnt;
+  
+  if (len == 0)
+    return;
+
+  pnt = (u_char *) addr;
+
+  for (i = 0; i < len; i++)
+    oid[i] = *pnt++;
+}
+
+int
+smux_header_generic (struct variable *v, oid *name, size_t *length, int exact,
+		     size_t *var_len, WriteMethod **write_method)
+{
+  oid fulloid[MAX_OID_LEN];
+  int ret;
+
+  oid_copy (fulloid, v->name, v->namelen);
+  fulloid[v->namelen] = 0;
+  /* Check against full instance. */
+  ret = oid_compare (name, *length, fulloid, v->namelen + 1);
+
+  /* Check single instance. */
+  if ((exact && (ret != 0)) || (!exact && (ret >= 0)))
+	return MATCH_FAILED;
+
+  /* In case of getnext, fill in full instance. */
+  memcpy (name, fulloid, (v->namelen + 1) * sizeof (oid));
+  *length = v->namelen + 1;
+
+  *write_method = 0;
+  *var_len = sizeof(long);    /* default to 'long' results */
+
+  return MATCH_SUCCEEDED;
+}
+#endif /* HAVE_SNMP */