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When I try to ping some of the IP addresses I get "connect: No buffer space is available" error. Also when I check /var/log/messages, there are some errors like as following

printk: 99 messages overflow
kernel: Neighbour table overflow

do you have any ideas about this problem?

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migrated from stackoverflow.com Jan 14 '11 at 14:50

This question came from our site for professional and enthusiast programmers.

There is a related thread here and a possible solution here.

Basically this happens because the interface "neighbour" table fills up when too many different addresses connect to your server within a short interval. Increasing the table size and using more aggressive garbage collection for its contents resolves this issue.

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thanks for your reply. I will check and let you know the result. – Sutharsan Jan 14 '11 at 9:30

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