Running 3.5.7 under Debian. In my cache.log I get pinger exiting every day around 06:25. 2015/09/18 06:25:01| Set Current Directory to /var/spool/squid 2015/09/18 06:25:01 kid1| storeDirWriteCleanLogs: Starting... 2015/09/18 06:25:01 kid1| Finished. Wrote 34846 entries. 2015/09/18 06:25:01 kid1| Took 0.00 seconds (7102731.35 entries/sec). 2015/09/18 06:25:01 kid1| logfileRotate: stdio:/var/log/squid/access.log 2015/09/18 06:25:01 kid1| Rotate log file stdio:/var/log/squid/access.log 2015/09/18 06:25:01 kid1| Pinger socket opened on FD 14 2015/09/18 06:25:01| pinger: Initialising ICMP pinger ... 2015/09/18 06:25:01| pinger: ICMP socket opened. 2015/09/18 06:25:01| pinger: ICMPv6 socket opened 2015/09/18 23:59:01| Set Current Directory to /var/spool/squid 2015/09/18 23:59:01 kid1| Closing Pinger socket on FD 14 2015/09/18 23:59:01 kid1| storeDirWriteCleanLogs: Starting... 2015/09/18 23:59:01 kid1| Finished. Wrote 36066 entries. 2015/09/18 23:59:01 kid1| Took 0.01 seconds (2682683.73 entries/sec). 2015/09/18 23:59:01 kid1| logfileRotate: stdio:/var/log/squid/access.log 2015/09/18 23:59:01 kid1| Rotate log file stdio:/var/log/squid/access.log 2015/09/18 23:59:01 kid1| Pinger socket opened on FD 17 2015/09/18 23:59:01| pinger: Initialising ICMP pinger ... 2015/09/18 23:59:01| pinger: ICMP socket opened. 2015/09/18 23:59:01| pinger: ICMPv6 socket opened 2015/09/18 23:59:11| Pinger exiting. 2015/09/19 06:25:02 kid1| Closing Pinger socket on FD 17 2015/09/19 06:25:02| Pinger exiting. I have a cron task to do a "squid -k rotate" at 23:59 which you can see happens, but why is pinger exiting at 06:25? For completeness here's my uncommented squid.conf Cheers, MarkJ acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT acl windowsupdate dstdomain windowsupdate.microsoft.com acl windowsupdate dstdomain .update.microsoft.com acl windowsupdate dstdomain download.windowsupdate.com acl windowsupdate dstdomain redir.metaservices.microsoft.com acl windowsupdate dstdomain images.metaservices.microsoft.com acl windowsupdate dstdomain c.microsoft.com acl windowsupdate dstdomain www.download.windowsupdate.com acl windowsupdate dstdomain wustat.windows.com acl windowsupdate dstdomain crl.microsoft.com acl windowsupdate dstdomain sls.microsoft.com acl windowsupdate dstdomain productactivation.one.microsoft.com acl windowsupdate dstdomain ntservicepack.microsoft.com acl wuCONNECT dstdomain www.update.microsoft.com acl wuCONNECT dstdomain sls.microsoft.com http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny manager http_access allow CONNECT wuCONNECT localnet http_access allow windowsupdate localnet http_access allow localnet http_access allow localhost http_access deny all http_port 3128 cache_mem 128 MB maximum_object_size_in_memory 256 KB maximum_object_size 512 MB memory_replacement_policy lru cache_replacement_policy heap LFUDA cache_dir aufs /var/spool/squid 16384 32 256 quick_abort_min -1 KB client_request_buffer_max_size 128 KB coredump_dir /var/spool/squid access_log /var/log/squid/access.log squid cache_log /var/log/squid/cache.log netdb_filename none refresh_pattern -i microsoft.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windowsupdate.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windows.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern (\.deb|\.udeb)$ 1440 80% 10080 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 dns_nameservers 203.50.2.71 139.130.4.4 host_verify_strict on max_filedescriptors 16384 dns_v4_first on _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users