PuTTY bug portfwd-addr-family

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summary: Unix listening sockets (e.g., tunnels) are IPv6-only by default
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: high: This should be fixed in the next release.
present-in: 0.60

On a Unix system supporting IPv6, PuTTY will by default create listening sockets (e.g. for the local end of a local-to-remote tunnel) as IPv6-only. Attempts to connect to the port using IPv4 addresses ( will fail, and often the same problem will occur with the name "localhost". This occurs for instance on Ubuntu Linux (so this is probably what's behind LP #67488).

This contradicts the documentation of the default "Auto" setting for tunnels, which states that "ticking 'Auto' should always give you a port which you can connect to using either protocol."

Unix PuTTY should ensure that listening sockets are valid for at least the address families specified in the configuration.


Patch: 01f201c856d6$b4d335f0$020da8c0@JSD.jemmettsoftware.co.uk

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(last revision of this bug record was at 2008-02-25 23:57:50 +0000)