Listening wildcards in shishid.

[Mats Erik Andersson]

Hello again,

on a dual stacked system, having shishid(8) listen
on a naive AF_INET6 wildcard address, is causing
a bind failure for any AF_INET wildcard address.
It is better to set the socket option IPV6_V6ONLY
on all AF_INET6 listening sockets in order that
no AF_INET socket be rejected, causing an annoying
error message of no use. Patch included.

Best regards,

  Mats E A

0001-shishid-Use-single-stacked-AF_INET6-sockets.patch
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