PuTTY semi-bug win-canonical-hostname

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summary: Canonical hostname (in title bar) uses reverse lookup on Windows
class: semi-bug: This might or might not be a bug, depending on your precise definition of what a bug is.
difficulty: fun: Just needs tuits, and not many of them.
absent-in: 0.57
present-in: 0.58
fixed-in: r5614 b33d9e4a446bea00878433fc1ead9353bd9b2da1 2005-04-08 (0.59)

As a side-effect of IPv6 support, on modern versions of Windows, the hostname displayed in the title bar has changed - it is now the result of a forward and reverse lookup, whereas before it was whatever the OS regarded as a "canonical name" (usually the input hostname resolution of CNAMEs/search paths).

This seems overenthusiastic, and bugs some people, so it's been reverted to the previous behaviour.

The title bar is the main use of the canonical name, so this is largely a cosmetic change. (It may also be used for some other things such as proxy exclusions.)

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Audit trail for this semi-bug.

(last revision of this bug record was at 2017-04-28 16:52:45 +0100)

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