Re: IPv6 in Debian
On Mon, Jul 30, 2007 at 10:33:10PM +0200, Kurt Roeckx <kurt@roeckx.be> wrote:
> I've never actually had a problem on ipv4-only hosts. It would be nice
> if you could describe your problems in more detail.
The typical problem, which is what Tomas was pointing at with AAAA
request being done before A requests, is that if the ipv6 module is
loaded and you are in a ipv4-only environment, you still get a link
local ipv6 address, and applications (glibc, actually) think (quite
rightfully, from their PoV) that you are using ipv6.
Then you end up doing AAAA requests, which adds delay to getting the
ipv4 connection, and in the event they end up with some data (for
the few sites that have AAAA entries), you even try to connect to an
impossible to reach ipv6 address.
IPv6 enabled by default in a IPv4-only environment is a PitA. And this
is probably impossible to fix.
Mike
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