Hi all We have experienced some issue on our squid servers, time to times the listen port fails and users are unable to connected to the proxy. We already try use squid 4.17 and squid 5.8 but had the same issue on both version, you can find I GDrive the extract of the cache.log on the time of the failure. https://drive.google.com/file/d/1gZ-ITgH4PUOr7FuKaEr3qKRn-_4duspK/view?usp=s haring On the cache log I see to many idnsSendQuery: Can't send query, no DNS socket! And 2023/04/10 16:25:59 kid4| Waiting 10 seconds for active connections to finish 2023/04/10 16:25:59 kid4| Preparing for shutdown after 763 requests This is the dns configuration squid/dns.conf # Return DNS used by the system (means resolv.conf) client_dst_passthru off host_verify_strict off ignore_unknown_nameservers off dns_retransmit_interval 3 seconds dns_v4_first on ipcache_size 16384 ipcache_low 90 ipcache_high 95 fqdncache_size 1024 positive_dns_ttl 6 hours negative_dns_ttl 300 seconds Resolv.conf domain xyz.my search xyz.my options attempts:2 timeout:2 nameserver 127.0.0.1 nameserver 8.8.8.8 nameserver 1.1.1.1 127.0.0.1 is the unbound internal DNS. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users