Squidguard: ACL redirect modes 'redirect' and 'err page' send unresolvable URLs to the client.
Squid running in bump mode. Though that should not affect this.
When configuring Common or Group ACLs or applying the redirect to a specific target catagory setting the redirect modes ''redirect' and 'err page'results in a bad URL being passed to the client.
If an https URL is entered the resulting client error is:
The following error was encountered while trying to retrieve the URL: https://https/* Unable to determine IP address from host name https
Choosing redirect mode 'url move' which sends a 301 to the client allows the error page to be shown as expected.