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Linux Networking

Posted on 2013-12-15
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Last Modified: 2014-01-06
I have 4 VMs running on redhat. Currently two of them are up and running.

I have 4 virtual NICs on each VMs. I configured one NIC to the following IP.

172.16.3.1

when I tried to bring this interface up it says,

Error, some other host already uses address 172.16.3.1

How do I find out which host is using?

I tried to ping the IP and its pinging. when i tried to do arp -a, i don't see this address.
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Question by:ittechlab
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5 Comments
 
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Expert Comment

by:TobiasHolm
ID: 39720211
Is it an IP on the local subnet? Then you could check the routers arp-table to see if the IP's used and to which mac-address.

Regards, Tobias
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Accepted Solution

by:
ittechlab earned 0 total points
ID: 39720218
i just recently noticed that it was gateway address used by linux virtual network.
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LVL 18

Expert Comment

by:TobiasHolm
ID: 39720241
Ok! So now you know where that IP is used!

Regards, Tobias
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Author Comment

by:ittechlab
ID: 39720274
when i created a virtual network it was used in virtual network gateway.
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Author Closing Comment

by:ittechlab
ID: 39758779
i found the answer my self
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