[Bug 2565] New: [IcedTea6] Replace ipv4-mapped-ipv6-addresses.patch with upstream fix 6882910

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=2565

            Bug ID: 2565
           Summary: [IcedTea6] Replace ipv4-mapped-ipv6-addresses.patch
                    with upstream fix 6882910
           Product: IcedTea
           Version: 6-hg
          Hardware: all
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: IcedTea
          Assignee: gnu.andrew at redhat.com
          Reporter: gnu.andrew at redhat.com
                CC: unassigned at icedtea.classpath.org

ipv4-mapped-ipv6-addresses.patch contains an early version of a fix for systems
where net.ipv6.bindv6only=1. It is largely the same as the later upstream fix,
6882910, but centralises the getsockopt check for it in common code, which is
then called by NET_Connect.

In doing so, it alters a plain connect call to a NET_Connect one:

-        /* no need to use NET_Connect as non-blocking */
-        connect_rv = connect(fd, (struct sockaddr *)&him, len);
+        /* no need to use NET_Connect as non-blocking; BUT! We want to
+         * support IPv4 mapped IPv6 adresses. */
+        connect_rv = NET_Connect(fd, (struct sockaddr *)&him, len);

This leads to compatibility issues in some scenarios, so we should synchronise
with the upstream version. Moreover, testing suggests that the current fix does
not fully solve the issue anyway.

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