Please note the difference if I use flag --inet6 (that doesn't work) or inet4 that works get -v --inet6-only <a href="http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml">http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml </a> --13:38:06-- <a href="http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml">http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml</a> => `repomd.xml.6' Risoluzione di <a href="http://download.fedora.redhat.com">download.fedora.redhat.com</a> in corso... fallito: Name or service not known. wget -v --inet4-only <a href="http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml"> http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml</a> --13:40:30-- <a href="http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml">http://download.fedora.redhat.com/pub/fedora/linux/core/4/i386/os/repodata/repomd.xml </a> => `repomd.xml.6' Risoluzione di <a href="http://download.fedora.redhat.com">download.fedora.redhat.com</a> in corso... <a href="http://66.187.224.20">66.187.224.20</a>, <a href="http://209.132.176.20"> 209.132.176.20</a>, <a href="http://209.132.176.220">209.132.176.220</a>, ... Connessione a download.fedora.redhat.com|66.187.224.20:80... connesso. HTTP richiesta inviata, aspetto la risposta... 200 OK Lunghezza: 1,140 ( 1.1K) [text/xml] 100%[====================================>] 1,140 --.--K/s 13:40:31 (673.08 KB/s) - "repomd.xml.6" salvato [1140/1140] This happens on my router therefore I can't also run yum update yum update Setting up Update Process Setting up repositories Cannot find a valid baseurl for repo: updates-released Error: Cannot find a valid baseurl for repo: updates-released Please note that similar commands work on other computer behind my router. What shall I investigate??? -- Antonio Montagnani Skype : antoniomontag