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version 1.32, 2018/10/03 12:08:00 version 1.33, 2018/10/03 12:10:06
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     </ul>      </ul>
 <p>  <p>
   
   <li>Security improvements:
       <ul>
       <li>New <a href="https://man.openbsd.org/unveil.2">unveil(2)</a>
           system call to restrict file system access of the calling
           process to the specified files and directories.  It is most
           powerful when properly combined with privilege separation
           and <a href="https://man.openbsd.org/pledge.2">pledge(2)</a>.
       <li>New "retguard" security mechanism on amd64 and arm64:
           use per-function random cookies to protect access to function
           return instructions, making them harder to use in ROP gadgets.
       <li>Simultaneous multithreading (SMT) is now disabled by default
           and can be enabled with the new <code>hw.smt</code>
           <a href="https://man.openbsd.org/sysctl.2">sysctl(2)</a> variable.
       <li>Audio recording is now disabled by default and can be enabled
           with the new <code>kern.audio.record</code>
           <a href="https://man.openbsd.org/sysctl.2">sysctl(2)</a> variable.
       </ul>
   <p>
   
 <li>Routing daemons and other userland network improvements:  <li>Routing daemons and other userland network improvements:
     <ul>      <ul>
     <li><a href="https://man.openbsd.org/ospf6d.8">ospf6d(8)</a> can now      <li><a href="https://man.openbsd.org/ospf6d.8">ospf6d(8)</a> can now
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     <li><a href="https://man.openbsd.org/route.8">route(8)</a> now errors out      <li><a href="https://man.openbsd.org/route.8">route(8)</a> now errors out
         on bad <tt>-netmask/-prefixlen</tt> usage instead of configuring          on bad <tt>-netmask/-prefixlen</tt> usage instead of configuring
         ambigious routes.          ambigious routes.
     </ul>  
 <p>  
   
 <li>Security improvements:  
     <ul>  
     <li>New <a href="https://man.openbsd.org/unveil.2">unveil(2)</a>  
         system call to restrict file system access of the calling  
         process to the specified files and directories.  It is most  
         powerful when properly combined with privilege separation  
         and <a href="https://man.openbsd.org/pledge.2">pledge(2)</a>.  
     <li>New "retguard" security mechanism on amd64 and arm64:  
         use per-function random cookies to protect access to function  
         return instructions, making them harder to use in ROP gadgets.  
     <li>Simultaneous multithreading (SMT) is now disabled by default  
         and can be enabled with the new <code>hw.smt</code>  
         <a href="https://man.openbsd.org/sysctl.2">sysctl(2)</a> variable.  
     <li>Audio recording is now disabled by default and can be enabled  
         with the new <code>kern.audio.record</code>  
         <a href="https://man.openbsd.org/sysctl.2">sysctl(2)</a> variable.  
     </ul>      </ul>
 <p>  <p>
   

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