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I'm running CentOS 5 and noticed for the past week that eth0 settings keep changing and I have to reset them.

Any ideas what it might be or where I need to start?

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David, is ipaddress is getting change or duplex mode is getting change? – neolix Feb 20 '12 at 11:40
ip is getting changed at least (I don't know what duplex mode is [noob]) – David Feb 20 '12 at 11:44
iptables -I INPUT -p tcp --dport some_port -j LOG then tail -f /var/log/messages Afterwards, to see how much data has been hit by that rule: iptables -L -n -v Or you could run tcpdump and grep out the ports. – neolix Feb 20 '12 at 11:51
I reckon this happens sometime in the middle of the night. Is there a way to log changes to the network configuration? – David Feb 20 '12 at 11:56
David, if this is a static ipaddress then same one changing manually. – neolix Feb 20 '12 at 12:17
up vote 0 down vote accepted

My bet is on the NetworkManager service...

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