Thanks, despite being marked "experimental" it does appear to work in the OP's case:

use warnings;
use strict;
use XML::LibXML::Reader;

my $xml = <<'ENDXML';
<foo xmlns="http://www.example.com"><bar/></foo>
ENDXML

my $reader = XML::LibXML::Reader->new(string => $xml);
while ($reader->read) {
    my $node = $reader->copyCurrentNode;
    $node->setNamespaceDeclURI(undef, undef)
        if $node->nodeName eq 'bar';
    print "$node";
}

__END__

<foo xmlns="http://www.example.com"/><bar/><foo xmlns="http://www.exam
+ple.com"/>

[download]

Unfortunately I might still be missing something, because applied to choroba's code here it doesn't seem to change the namespace of the nodes.

In reply to Re^3: copyCurrentNode in XML::LibXML::Reader will add xmlns attribute ( setNamespaceDeclURI ) by haukex
in thread copyCurrentNode in XML::LibXML::Reader will add xmlns attribute by mjfan

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