<!--
http://www.w3.org/TR/xmldsig2ed-tests/#c14n11xmlbase-prop-6

Check that implementations of [XML-C14N1.1] properly build the xml:base in 
one element that originally had no xml:base  attribute.
-->
<XPath xmlns:ietf="http://www.ietf.org" >
(//. | //@* | //namespace::*)
[ancestor-or-self::ietf:e3]
</XPath>