We see the same behaviour with 10.04.3 Lucid "Clients" (with backports & proposed updates enabled) using a "regular" squid3 proxy server
-------------------cut-------------- root@backup:~# dpkg -l apt Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-===============================================-===============================================-============================================================================================================== ii apt 0.7.25.3ubuntu9.9 Advanced front-end for dpkg root@backup:~# cat /etc/apt/apt.conf.d/99proxy Acquire::http::Proxy "http://dhcp.office.XXX.de:3128"; root@dhcp:~# dpkg -l squid3 Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-===============================================-===============================================-============================================================================================================== ii squid3 3.0.STABLE19-1ubuntu0.1 A full featured Web Proxy cache (HTTP proxy) root@dhcp:~# egrep -v '^(#|$)' /etc/squid3/squid.conf acl manager proto cache_object acl localhost src 127.0.0.1/32 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 acl localnet src 192.168.219.0/24 # RFC1918 possible internal network acl localnet src 192.168.220.0/23 # RFC1918 possible internal network acl localnet src 192.168.230.0/24 # RFC1918 possible internal network acl localnet src 192.168.232.0/23 # RFC1918 possible internal network acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny to_localhost http_access allow localnet http_access allow localhost http_access deny all icp_access deny all htcp_access deny all http_port 3128 hierarchy_stoplist cgi-bin ? cache_mem 200 MB maximum_object_size_in_memory 10240 KB cache_replacement_policy heap LFUDA cache_dir ufs /var/spool/squid3 8192 16 256 maximum_object_size 512 MB access_log /var/log/squid3/access.log squid refresh_pattern -i .udeb$ 129600 100% 129600 refresh_pattern -i .deb$ 129600 100% 129600 refresh_pattern -i .rpm$ 129600 100% 129600 refresh_pattern -i .tgz$ 129600 100% 129600 refresh_pattern -i .gz$ 129600 100% 129600 refresh_pattern -i .bz2$ 129600 100% 129600 refresh_pattern -i .exe$ 129600 100% 129600 refresh_pattern -i .cab$ 129600 100% 129600 refresh_pattern -i .img$ 129600 100% 129600 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern (cgi-bin|\?) 0 0% 0 refresh_pattern . 0 20% 4320 icp_port 3130 coredump_dir /var/spool/squid3 -------------------cut-------------- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/915246 Title: update-manager could detect transparent proxy to avoid "Hash Sum mismatch" errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/915246/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs