Add reference link to error messages
@@ -54,6 +54,7 @@ class VarBind(namedtuple('VarBind', 'oid, value')):
return super(VarBind, cls).__new__(cls, oid, value)
+# Error messages as defined in https://tools.ietf.org/html/rfc3416#section-3
ERROR_MESSAGES = {
0: '(noError)',
1: '(tooBig)',
