Verizon Policy Statement on Net Neutrality

Owen DeLong owen at
Sun Mar 1 21:26:51 UTC 2015

>> It was the combination of asymmetric, no or few IPs (and NAT), and
>> bandwidth caps.
> let's not rewrite history here: IPv4 address scarcity has been a thing
> since the very early 1990s.  Otherwise why would cidr have been created?

CIDR had nothing to do with address scarcity. CIDR was invented for routing
table slot scarcity in Cisco AGS hardware of the era.

Routers running out of BGP table space wasn’t just a fear at the time, it was
a real problem on a number of networks, including, but not limited to SPRINT
and MCI who were the big dogs in the fight at the time.

NAT, OTOH, is an address conservation mechanism which has unfortunately
of late been mistaken for a security tool. If only people would realize how much
NAT negatively impacts security, manageability, etc.


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