[CentOS] Inquiry:How to check for IP conflict on my CentOS server?

Tue Nov 10 10:12:19 UTC 2009
hadi motamedi <motamedi24 at gmail.com>

 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
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