DHCP request error. Send_packet now permitted, How to debug, What does it mean

Posted by Sparsh Gupta on Server Fault See other posts from Server Fault or by Sparsh Gupta
Published on 2011-02-27T19:36:07Z Indexed on 2011/02/27 23:26 UTC
Read the original article Hit count: 490

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ubuntu

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iptables

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dhcp

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csf

Hello

I recently installed CSF firewall and have made live a new server which is accepting around 600req/second.

Its basically a reverse proxy and I found in pingdom and munin that for a particular time, the response times of the server increased by 3 folds. I looked into logs and exactly at that point, I found loads of entries like this:

Feb 27 15:22:09 li235-57 dhclient: DHCPREQUEST of <My IP address> on eth0 to 207.192.68.72 port 67
Feb 27 15:22:09 li235-57 dhclient: send_packet: Operation not permitted

Can you help me understand what went wrong and what exactly happened. Is there any settings I should change in CSF or any pointer to debug this further

Thanks

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