Package: manpages Version: 3.74-1 Severity: normal Tags: ipv6 Option single-request-reopen was documented following ticket #699387: The resolver uses the same socket for the A and AAAA requests. Some hardware mistakenly sends back only one reply. When that happens the client system will sit and wait for the second reply. Turning this option on changes this behavior so that if two requests from the same port are not handled correctly it will close the socket and open a new one before sending the second request.
While the description is correct, it seems to imply that the option is only meant to workaround broken hardware (presumably routers). This may have been the original intent, but as I personally found out, the option also works around broken Windows Server DNS servers. In my case, this was Windows Server 2008 [R1], which is relatively obsolete, but according to http://robert.penz.name/902/slow-dns-resolving-with-linux-systems-against-windows-dns-server/ this persists in current versions, so even though the fault seems to be Microsoft's, this better be as clear as possible. As a minimum, we should use a generic designation (something like "DNS servers" rather than "hardware"). It may even be warranted to mention specific examples, as if I understand correctly, this affects default Debian clients using default Windows Server DNS servers. -- System Information: Debian Release: 8.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.16.0-4-686-pae (SMP w/2 CPU cores) Locale: LANG=fr_CA.UTF-8, LC_CTYPE=fr_CA.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) manpages depends on no packages. manpages recommends no packages. Versions of packages manpages suggests: ii konqueror [man-browser] 4:4.14.2-1 ii man-db [man-browser] 2.7.0.2-5 -- no debconf information
