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<body class='hmmessage'><div dir='ltr'><span style="color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">Hi,</span><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);"><br style="line-height: 21.3px;"></div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">I have a few servers running a recursive DNS bind service, i configured one of the servers to limit the rate of requests.</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">my configuration is:</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);"><br style="line-height: 21.3px;"></div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">rate-limit { log-only yes; errors-per-second 8; nxdomains-per-second 8; ipv4-prefix-length 32;</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);"><br style="line-height: 21.3px;"></div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">As soon as i apply these changes my server drop 90% of the requests after a minute or two.</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">do you have any idea why is this happening ?</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">bind version is :</div><div style="line-height: 21.3px; color: rgb(68, 68, 68); font-size: 15px; background-color: rgb(255, 255, 255);">BIND 9.9.4-RedHat-9.9.4-29.el7_2.4</div><br><br>
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<font color="#3366ff"><font color="#000000">Respectfully<b><br>
</b><b>Mahdi A. Mahdi</b></font></font><font color="#3366ff"><br><br></font><font color="#3366ff"></font></div> </div></body>
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