Re: [exim] Exim4 & IPV4

On Wed, 2005-11-30 at 08:14 -0500, Marc Sherman wrote:
> There was no reply to my message last time we talked about this. Can
> you rebut my concerns about tunneling?

I probably didn't see your message last time, because it didn't land in
my inbox. I didn't see it this time either, until now. In general,
you'll stand a better chance of getting a reply if you actually do me
the courtesy of directing your question to me.

> There was no reply to my message last time we talked about this. Can
> you rebut my concerns about tunneling?

Connections between 6to4 hosts (the 2002::/16 subnet) do go directly
between the sites in IPv4 -- there's a small overhead on the packets,
but the routing is the same. If you're connecting to a host with a
_real_ IPv6 address from your 6to4 host, then it depends on where your
closest tunnelling server (192.88.99.1) is, and it depends how the IPv6
routes compare with the IPv4 routes.

If you send packets for 2002::/16 directly in IPv4 and send anything
else to an HE.net tunnel, then I suspect it won't be particularly
inefficient.

--
dwmw2