netmask/Gateway changed itself

[ckchan]

Hello there,
Some of our Unix servers have access problem
suddenly, found that route table have been changed. Question, What would be the possible
cause ? Would the route table changed itself when encountered problem ?

Thank you

[Muthukumar_5]

May be some one tried to change the setting by command line with ifconfig or /etc/rc.config.d/netconf file is changed.

Are you using DHCP? If so your interface ip-address, gateway and netmask is changed too.

--
Muthu

[Arunvijai_4]

Hello,

Did you look into log files ? syslog.log and dmesg?

-Arun

[ckchan]

Hi
Nothing particular in dmesg and syslog. The server is not using DHCP,
One of the server, netmask has been changed, the other, the default gateway has been changed to the host ip address.
Would the server reread the setting in /etc/rc.config.d/netconf without rebooting the server?

thank you

[Muthukumar_5]

It is possible when you are doing as,

# /sbin/init.d/net stop
# /sbin/init.d/net start

it will do it. Check history files for ifconfig or route command usage.

--
Muthu

[Arunvijai_4]

Hello,

You can do with # /sbin/init.d/net
USAGE: /sbin/init.d/net {start_msg | stop_msg | start | stop}


-Arun

[ckchan]

Thank you !