The always_direct access rules define a class of requests that must always be forwarded directly to the origin server. For these, Squid doesn't query or otherwise consider any neighbor caches. See Section 10.4.4.

Syntax	always_direct allow|deny [!]ACLname ...
Default	No default
Example	acl LocalServers dst 172.17.0.0/24 always_direct allow LocalServers
Related	acl, never_direct, prefer_direct, nonhierarchical_direct, minimum_direct_hops, minimum_direct_rtt, cache_peer_access