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 <[email protected] > wrote: > On Thu, Jun 28, 2012 at 3:35 PM, PC <[email protected]> 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... >
