Dear All Please be informed that I have set an secondary IP address on my CentOS server to be able to reach to another Intranet , as the followings: #ifconfig eth0:1 172.18.209.1 netmask 255.255.0.0 up But I am not aware if any other node on the new Intranet is making use of this IP address . Can you please do me favor and let me know how can I check if any IP conflict occured ? Let me thank you in advance -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20091110/f02f8ced/attachment-0004.html>