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Remove configure probe for sockaddr_in6 and require AF_INET6.

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SUSv3 <netinet/in.h> defines struct sockaddr_in6, and all targeted Unix
systems have it.  Windows has it in <ws2ipdef.h>.  Remove the configure
probe, the macro and a small amount of dead code.

Also remove a mention of IPv6-less builds from the documentation, since
there aren't any.

This is similar to commits f5580882 and 077bf2f2 for Unix sockets.  Even
though AF_INET6 is an "optional" component of SUSv3, there are no known
modern operating system without it, and it seems even less likely to be
omitted from future systems than AF_UNIX.

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGKErNfhmvb_H0UprEmp4LPzGN06yR2_0tYikjzB-2ECMw@mail.gmail.com
This commit is contained in:
Thomas Munro
2022-08-26 10:13:22 +12:00
parent 28ec316787
commit bcc8b14ef6
16 changed files with 7 additions and 105 deletions
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doc/src/sgml/client-auth.sgml
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@ -305,8 +305,6 @@ hostnogssenc <replaceable>database</replaceable> <replaceable>user</replaceabl
An entry given in IPv4 format will match only IPv4 connections,
and an entry given in IPv6 format will match only IPv6 connections,
even if the represented address is in the IPv4-in-IPv6 range.
Note that entries in IPv6 format will be rejected if the system's
C library does not have support for IPv6 addresses.
</para>
<para>