Hi all!
I'm running C6 (up to date) on x86-64. have been running on the same system for over a year.
a couple of times lately access to the outside network has suddenly stopped working for reasons that I didn't figure out until it happened again yesterday.
I had the time to fool with it, yesterday, so after quite a bit of head-banging I found that it had no default route set up (to make this story less long...).
An appropriate route command "fixed" it and all was well, but... I had rebooted several times, among other drastic actions, such as rebooting the router and cable modem, and none of those things helped. so whatever it was that lost the default route was persistent across boots, while the manual route command to re-add it was NOT persistent across boots.
At some point in fooling with it, I did something--and right now I have no idea what it was--that suddenly caused routes to persist across boots. I know I did not change any of /etc/sysconfig/network*, but I did look at them and saw that ifcfg-eth0 DID contain a line for default route, even though the route command did not reflect it.
So, if anyone has any good guesses on what the heck happened here, I'd like to hear them.
thanks in advance!