I am using Debian Linux on a system connected to DSL. I recently had the idea of temporarily taking the Ethernet connection down for periods of time when network access is not needed. One could use cron or at to do the ifconfig eth0 down at one time and then bring it back up with ifconfig eth0 up at some other time. What happens is that the ifconfig eth0 down and ifconfig eth0 up commands both work normally but the system can't seem to connect to remote hosts after the interface comes back up. Attempts to use ssh get the "name or service not available." error messages and attempts to ping remote hosts give a "network is unreachable" error. What else should I be looking at to restore functionality? This isn't an urgent situation, but my curiosity is up now since everything looks good but something doesn't return to normal when the Ethernet interface is brought back up. Martin McCormick WB5AGZ Stillwater, OK OSU Center for Computing and Information Services Network Operations Group
