Ao executar o apt-get update, recebo o erro abaixo.
Ign http://mirror.tcpdiag.net utopic-security/main Translation-en_IN
Ign http://mirror.tcpdiag.net utopic-security/main Translation-en
Ign http://mirror.tcpdiag.net utopic-security/multiverse Translation-en_IN
Ign http://mirror.tcpdiag.net utopic-security/multiverse Translation-en
Ign http://mirror.tcpdiag.net utopic-security/restricted Translation-en_IN
Ign http://mirror.tcpdiag.net utopic-security/restricted Translation-en
Ign http://mirror.tcpdiag.net utopic-security/universe Translation-en_IN
Ign http://mirror.tcpdiag.net utopic-security/universe Translation-en
Err http://mirror.tcpdiag.net utopic-updates/main Sources
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/restricted Sources
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/universe Sources
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/multiverse Sources
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/main amd64 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/restricted amd64 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/universe amd64 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/multiverse amd64 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/main i386 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/restricted i386 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/universe i386 Packages
404 Not Found
Err http://mirror.tcpdiag.net utopic-updates/multiverse i386 Packages
404 Not Found
Eu tentei espelhos diferentes disponíveis, mas não consegui corrigi-los. Você pode por favor me deixar a solução possível.