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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[CDRIVER-2536] Cannot auth with MIT Kerberos if rdns=false is in krb5.conf</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-2536</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;On Ubuntu with Cyrus SASL and MIT Kerberos, if I put the following in /etc/krb5.conf:&lt;/p&gt;
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&lt;p/&gt;
&lt;p&gt;... then the C Driver cannot authenticate to our Kerberos test server. This seems true whether I use the server&apos;s hostname or IP address in the URI, and whether I set CANONICALIZE_HOST_NAME to true or false. Is this expected, or is there a bug in _mongoc_sasl_get_canonicalized_name?&lt;/p&gt;</description>
                <environment></environment>
        <key id="507194">CDRIVER-2536</key>
            <summary>Cannot auth with MIT Kerberos if rdns=false is in krb5.conf</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Wed, 7 Mar 2018 16:45:50 +0000</created>
                <updated>Fri, 10 Feb 2023 16:07:25 +0000</updated>
                                                                            <component>auth</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1827155" author="jesse" created="Thu, 8 Mar 2018 13:33:12 +0000"  >&lt;p&gt;Once we know the answer we might need to update the comment above _mongoc_sasl_get_canonicalized_name:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;Some underlying layers of krb might do this for us, but they can be disabled in krb.conf.&lt;/p&gt;&lt;/blockquote&gt;</comment>
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