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[Nbd] 2.9.17 released

Hi all,

I just released 2.9.17.

The main change in this version is the addition of name-based exports.
This has a few important repercussions:
- When ran with a configuration file that contains exports, nbd-server
  will open a port on a port number that was just assigned by IANA for
  the NBD protocol (10809).
- By default, the 'port' option in the per-export sections of the
  configuration file now has no effect. For upgrade purposes, you may
  wish to temporarily specify 'oldstyle=true' in the [generic] section,
  so that clients that expect an export on a specific port will still
  find it. However, note that these clients cannot use port 10809,
  since the handshake part of the protocol had to be changed
- nbd-client now has a new '-N' command-line option that allows to
  specify the name of the wanted export. This name should be specified
  as the section name in the config file. E.g., a config file like this:

	exportname = /path/to/file

  would allow nbd-client to use it with 
    nbd-client <server> /dev/nbd0 -N export1

- When specifying an export on the command line, it is not at all
  possible to specify a name. Command line-specified exports will always
  use the old handshake protocol.

Other than the above, there should be no surprises.


The biometric identification system at the gates of the CIA headquarters
works because there's a guard with a large gun making sure no one is
trying to fool the system.

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