bug#40343: closed (28.0.50; dns-set-servers fails on IPv6 available Windows)

[GNU bug Tracking System]

Your message dated Fri, 03 Apr 2020 17:19:25 +0200
with message-id <address@hidden>
and subject line Re: bug#40343: 28.0.50; dns-set-servers fails on IPv6 
available Windows
has caused the debbugs.gnu.org bug report #40343,
regarding 28.0.50; dns-set-servers fails on IPv6 available Windows
to be marked as done.

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40343: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=40343
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> Subject: 
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> 28.0.50; dns-set-servers fails on IPv6 available Windows
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> Date: 
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> Tue, 31 Mar 2020 17:46:47 +0900
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> User-agent: 
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> Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (Gojō) APEL/10.8 EasyPG/1.0.0 Emacs/28.0 (x86_64-w64-mingw32) MULE/6.0 (HANACHIRUSATO)
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> dns-set-servers function fails to set dns-servers on Windows with IPv6
> available network.
>
> (progn
>   (require 'dns)
>   (dns-set-servers)
>   dns-servers)
>
> -> (nil)
>
> The reason is that Windows's nslookup program returns server's IPv6
> address if availeble but dns-set-servers function assumes that
> server's address is always IPv4.
>
> > C:\>nslookup localhost
> > サーバー:  server.lan
> > Address:  xxxx:xxxx:xxxx::1
> >
> > 名前:    localhost.lan
> > Addresses:  ::1
> >           127.0.0.1
>
> # "サーバー" and "名前" are Japanese translations for "Server" and
> # "Name", respectively.
>
> From dns-set-servers definition in lisp/net/dns.el
>
> > (re-search-forward
> >  "^Address:[ \t]*\\([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+\\)" nil t)
>
> -- 
> Kazuhiro Ito
>
>
>
> --- End Message ---
> --- Begin Message ---
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>
>
> Subject: 
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> Re: bug#40343: 28.0.50; dns-set-servers fails on IPv6 available Windows
>
>
>
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> Date: 
>
> Fri, 03 Apr 2020 17:19:25 +0200
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>
>
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> >>>>> On Fri, 03 Apr 2020 23:08:10 +0900, Kazuhiro Ito <address@hidden> said:
>
>     >> Thanks for that. This should fix all those cases:
>     Kazuhiro> Thank you for the patch.  It works well on Cygwin environment.  
> But I
>     Kazuhiro> noticed different problems in dns-query when TCP is used.
>
> Thanks for checking, pushed to master as 00f7744c1b
>
> Closing the bug.
>
>     Kazuhiro> 1. dns-write function needs to be called with TCP-P option.
>     Kazuhiro> 2. First 2 bytes of received data (length field) should be 
> truncated
>     Kazuhiro> for dns-read function.  Or dns-read function should accept TCP-P
>     Kazuhiro> option like dns-wrote function.
>
> Indeed, looks like thatʼs never worked. Iʼll fix those separately.
>
> Robert
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>
> --- End Message ---