cfengine-3.00b6 - cf-promises reports 'Duplicate selection of value for ipv4 (broken promise) in scope sys

When I run cf-promises on CentOS 5.2 Linux computer with two ethernet  
interfaces, it reports
'Duplicate selection of value for ipv4 (broken promise) in scope sys  
in bundle parameterization'

If I disable one of the two ethernet interfaces, the error does not  
occur.


The cfengine file can be as simple as:
====================
body common control
{
bundlesequence  => { "test" };
}

bundle agent test
{
reports:

  Yr2008::
     "Hello world";
}
====================