A number of IETF documents(*) state that there are some service providers
that place a NAT box in front of their entire network, so all their
customers get private addresses rather than public address.
It is often stated that these are primarily cable-based providers.
I am trying to get a handle on how common this practice is.
No one that I have asked seems to know any provider that does this,
and a search of a few FAQs plus about an hour of Googling hasn't
turned up anything definite (but maybe I am using the wrong keywords ...).
Can anyone give me some names of providers that do this?
Can anyone point me at any documents that indicate how common
this practice is?
- Philip
(*) Some IETF documents that mention this practice:
- RFC 3489
- draft-ietf-sipping-nat-scenarios-00.txt
(now expired, but available at
http://www.ietf.org/proceedings/02jul/I-D/draft-ietf-sipping-nat-scenarios-00.txt
