Am 22.08.12 15:01, schrieb Richard Reina: > I have a simple perl script that every few hours pings the handful of > machines on my LAN. Lately I've sometimes been getting > > ping of 192.168.0.1 succeeded > ping of 192.168.0.7 succeeded > ping of 192.168.0.5 FAILED > ping of 192.168.0.6 succeeded > ping of 192.168.0.9 succeeded > > This machine in question has been running Centos faithfully for about six > years and no recent changes to it have been made. When I try and ping the > machine manually it works. /var/og/messages does not seem irregular. Does > anyone know know what might be the problem or what else I might check? Recently I was faced with a similar problem (cant ping a device from time to time which was not touched for about two years...). My solution: check the lan cabel. The system I had problems with had been standing in the sun behind a window and the lan cabel was 'melting' and did not fit properly into the adapter. my2cents. -- Götz Reinicke . Filmakademie Baden-Württemberg GmbH