WordPress at a glance
filter is not described

get_network filter-hook . WP 4.6.0

Fires after a network is retrieved.

Usage

add_filter( 'get_network', 'filter_function_name_2675' );
function filter_function_name_2675( $_network ){
	// filter...

	return $_network;
}
$_network(WP_Network)
Network data.

Where the hook is called

get_network()
wp-includes/ms-blogs.php 1166
$_network = apply_filters( 'get_network', $_network );

Where the hook is used (in WP core)

Does not used.