bug#20015: 25.0.50; Slow Emacs startup after recent TRAMP changes

[Ivan Shmakov]

>>>>> Tassilo Horn <tsdh@gnu.org> writes:

[…]

 > # HERE IT HANGS again for 30 seconds
 > ssh: Could not resolve hostname host.does.not.exist: Name or service
 > not known

        Most commonly, that means that some of the DNS hosts listed in
        /etc/resolv.conf fail to respond promptly; please ensure that
        the contents of that file matches the intended configuration.

        Try using $ dig @2001:db8:42::53:53 host.name.invalid (where
        2001:db8:42::53:53 is a DNS IP address, as given with
        ‘nameserver’ lines in /etc/resolv.conf) to find out which of the
        servers results in this behavior.

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