[Bug 3816] regression: valid_hostname() refuses hostname with comma

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3816

Matthieu Baerts <matttbe at kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED
                 CC|                            |matttbe at kernel.org

--- Comment #2 from Matthieu Baerts <matttbe at kernel.org> ---
Hello,

> Comma characters are not valid in hostnames. Why is systemd using them?

The comma was used as a separator in systemd (and virtme-ng) to be able
to easily connect to a VM by only giving the VSOCK CID number, e.g.

  scp vsock,42:/FILE .


This works thanks to this config:

    Host unix/* unix,% vsock/* vsock,* machine/* machine,*
        ProxyCommand /usr/lib/systemd/systemd-ssh-proxy %h %p
        (...)


With 'scp' and 'rsync', the slash separator cannot be used, and that's
why the comma was added, see:

  https://github.com/systemd/systemd/pull/37035/


Note that systemd (and soon virtme-ng) has recently switched to '%' for
the separator, see:

  https://github.com/systemd/systemd/pull/37191


Then I guess this ticket can be marked as "wontfix".

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