North American Network Operators Group

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Re: Cool IPv6 Stuff

  • From: Joel Jaeggli
  • Date: Mon Jun 04 11:21:48 2007

Adrian Chadd wrote:
> On Mon, Jun 04, 2007, Sam Stickland wrote:
>> Personally I hate NAT. But I currently work in a large enterprise 
>> environment and NAT is suprisingly popular. I came from a service 
>> provider background and some of the attitudes I've discovered towards 
>> private addresses in enterprise environments are quite surprising. Aside 
>> for the usual proponents of using NAT to hide your internal address 
>> infrastructure (which security always seem to insist upon) quite a 
>> popular design rule of from seems to be "Only carry public addresses on 
>> the public Internet and only carry private addresses on your private 
>> network" :-|
>> If an Enterprise doesn't have a great deal for IP addresses that need to 
>> be routed on the public internet, and they thing that NAT is a _good_ 
>> design choice, it seems to me that they don't have a great deal of 
>> pressure to move to IPv6.
> In fact, and call me crazy, but I can't help but wonder how many enterprises
> out there will see IPv6 and its concept of "real IPs for all machines,
> internal and external!" and respond with "Hell No."
> Anyone got any numbers for that? I'm happy to admit I don't. :)

Hence the discussion of site-local (dead), ula, ula-c etc.

However widespread use of private address space in ipv4 costs people
huge amounts of money when you have to merge the business processes of
two or more large enterprise networks.

> Adrian