Thank you. I picked up this part of log as evidence that Squid does conduct DNS lookups AFTER a peer connection is selected( log ommited). In the configuration, a cache peer (parent proxy) for specified domains presents. And the relative part of config is already provided in some other thread of this post. TY Archer [email protected] 我也要制作一个 扫一扫,快速添加名片到手机 -------------------------------------------------------------------------------- ----The following is the content of the forwarded email---- From：Alex Rousskov To：squid-users Date：2026-01-13 04:02:09 Subject：Re: [squid-users] peer-select.cc, cache_peer and dns queries On 2026-01-09 17:19, archer wrote: > cache_peer a.b.c.d parent ... name=NodeNG > always_direct extranet_whitelist > never_direct extranet > I observed peer-select.cc still conducting DNS > lookups on an extranet domain , which is a purely domain-based ACL. e.g. > > peer_select.cc(833) selectSomeParent: CONNECT www.example.com > ... > peer_select.cc(460) resolveSelected: Find IP > destination for: www.example.com:443 via a.b.c.d The above debugging log snippet is unrelated to ACLs checking/code. Squid says that it needs to resolve a.b.c.d to connect to a peer at that a.b.c.d address. If a.b.c.d is alerady an IP address, then that resolution is going to be a no-op -- no actual DNS queries will be sent. I do not know what triggers other DNS queries in your case. If I have to guess, I would guess that peer selection algorithm finds multiple ways to satisfy that CONNECT-to-X request and some of those ways include a direct connection to X, triggering X resolution. > So, what can I do to have extranet DNS handled by the parent proxy, > while leaving the remainder to the child proxy, with a domain list ? > Squid Cache: Version 5.7 FWIW, the above version is not supported by the Squid Project. Alex. _______________________________________________ squid-users mailing list [email protected] https://lists.squid-cache.org/listinfo/squid-users
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