<div dir="ltr">Hello,<div><br></div><div>I have added a servfail-ttl 0; parameter in the named.conf file in the global section and restarted the named, but named is not coming up and I don't see any errors printing in the named.log. When I do a named-checkconf on named.conf it is giving error as UNKNOWN OPTION servfail-ttl. The version I am using is BIND 9.10.6 stable build. Can some one help me on this. </div><div>Thanks.</div><div><br></div><div>To fix this bug I have added above parameter <span style="color:rgb(3,171,204);font-family:Arial,Helvetica,sans-serif;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">
<span style="color:rgb(3,171,204);font-family:Arial,Helvetica,sans-serif;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><a href="https://kb.isc.org/article/AA-01562/0/CVE-2018-5734%3A-A-malformed-request-can-trigger-an-assertion-failure-in-badcache.c.html">CVE-2018-5734: A malformed request can trigger an assertion failure in badcache.c</a></span></span></div></div>