get_permalink to attachment not working - attachment

Question

I have following code:
<?php
$args = array(
'post_type' => 'attachment',
'numberposts' => 12,
'post_status' => null
);
$attachments = get_posts( $args );
if ( $attachments ) {
foreach ( $attachments as $attachment ) {
echo '<li><a href="'.get_permalink( $attachment->ID ).'">';
echo wp_get_attachment_image( $attachment->ID, array('100', '100') );
echo '</a></li>';
}
}
?>
The point of this script is to show last added 12 photos (thumbs of it). And this works perfect. But I want to add second funcionality - link to the page where it comes from (usually native gallery embed into post/page)
The problem is that in this case the link is corrupted. It always links to the very first post. What I am doing wrong?

Answer 1

Try get_attachment_link($attachment->ID).
Or the_attachment_link($attachment->ID) to directly print the anchor tag with the URL

Answer 2

Here is the final version:)
<?php
$args = array(
'post_type' => 'attachment',
'numberposts' => 12,
'post_status' => null
);
$attachments = get_posts( $args );
if ( $attachments ) {
foreach ( $attachments as $attachment ) {
$url = get_permalink( $attachment->ID );
echo '<li><a href="'.strstr($url, '/attachment', true).'">';
echo wp_get_attachment_image( $attachment->ID, array('100', '100') );
echo '</a></li>';
}
}
?>
/attachment is the starting point from which we want to remove everything from the url.