Re: technical contact at ATT Wireless

[PC <paul4004 () gmail com>]

I'm sure they use carrier grade NAT, yes.

However, nothing would prevent them from using a unique public IP assigned
to them for their DNS servers like others do.

Using RFC1918 space for a routed destination of an ISP service (DNS) is
particularly problematic for many VPN client configurations with corporate
address range overlap.

-Paul

On Thu, Jun 28, 2012 at 1:40 PM, Christopher Morrow <morrowc.lists () gmail com
> wrote:

> On Thu, Jun 28, 2012 at 3:35 PM, PC <paul4004 () gmail com> wrote:
>
> > Why they don't use public IP space belonging to them for DNS servers, I
> do
> > not know.
>
> they have the same addresses used in multiple VRF's? so much simpler
> for them to manage...