After applying code modification on ezhttptool.php in lib/ezutils (related issue : https://jira.ez.no/browse/EZP-20723), some valid links are always marked as invalid by linkcheck.php

These URLs returns a 200 code from curl command and are accessibles in web browser.

In EZP-20723 issue, the fix versions are 5.3.6 or 5.4.3. Do we have to upgrade our eZ Publish installation or is there an other way to force link validation ?

Here is a example of a valid URL by cURL and marked as invalid by linkcheck cronjob :
$ curl -S -I http://www.chu-tours.fr
HTTP/1.1 200 OK

Thanks for replying