key.dns_resolver - upcall for request-key to handle dns_resolver keys

       This  program  is  invoked by request-key on behalf of the kernel when kernel services (such as NFS, CIFS
       and AFS) want to perform a hostname lookup and the kernel does not  have  the  key  cached.   It  is  not
       ordinarily intended to be called directly.

       There   program   has   internal   parameters  that  can  be  changed  with  a  configuration  file  (see
       key.dns_resolver.conf(5) for more information).  The default configuration file is in /etc, but this  can
       be overridden with the -c flag.

       The  program can be called in debugging mode to test its functionality by passing a -D or --debug flag on
       the command line.  For this to work, the key description and the callout information  must  be  supplied.
       Verbosity can be increased by supplying one or more -v flags.

       The  program  may  also be called with --dump-config to show the values that configurable parameters will
       have after parsing the config file.

       All errors will be logged to the syslog.

       key.dns_resolver - upcall for request-key to handle dns_resolver keys

key.dns_resolver.conf(5), request-key.conf(5), keyrings(7), request-key(8)

Linux                                              18 May 2020                               KEY.DNS_RESOLVER(8)

/sbin/key.dns_resolver <key>
       /sbin/key.dns_resolver --dump-config [-c <configfile>]
       /sbin/key.dns_resolver -D [-v] [-v] [-c <configfile>] <desc>
       <calloutinfo>