Originally posted by: spidey07
that's what NAT is for. i simply don't see anything wrong with NAT/PAT.
I hope you wont mind, then, when global IPv4 address space allocation shortages hit severely, and businesses and individuals alike get a single IP address each. (Hypothetical worst-case situation here.)
Have fun configuring NAT throughout your organization to deal with this. Have fun telling your boss that he can't videoconfrence with his wife on vacation from work, because of the IPv4 address shortage and having to use NAT (with no end-to-end network connectivity), instead of switching to IPv6 at some prior date.
Originally posted by: spidey07
IPv6 IS NOT THE FUTURE!!!!
It is IMHO a stalemated and dead end venture.
Then what should replace IPv4? You know that it will not last, the IPv4 addess space is already highly-constrained, and will eventually be depleted, perhaps in only a few years.
Btw, I just came across this, it's a slide from a presentation done in mid-2002, it's interesting for the fact that you can actually see the speed IPv6 adoption between the US and the rest of the world. (Hint, they seem to be on the uptake twice as fast as us. Not too surprising though, the US still uses the "english" measurement system, while the rest of the world has gone metric. I really hope the same doesn't happen with IPs, the US runs IPv4, while the rest of the world runs IPv6.)
http://www.nanog.org/mtg-0210/ppt/cathy/sld011.htm
Originally posted by: spidey07
Oh - an another correction. it was mentioned that IP addresses are bought.
They are not bought. They are applied for. Give a good network plan and you'll get the address space you need. There is no cost. Getting a class A nowadays would be difficult, but otherwise - if you have the plan you'll get it.
http://www.nanog.org for good info
<---not a provider, I'm enterprise with strong ties and background in the tier one provider area
Slightly incorrect. It is true that IP address space cannot be privately owned, but there is a cost for "registering" to recieve an IP address allocation, and its certainly not cheap, at least not for smaller networks or end-users. NANOG isn't really directly relevent here, ARIN is who is in charge of actually allocating IP addresses, although I know that they work together.
Here's a link to an article that I found from 1997, talking about upcoming fees for IPv4 address-space allocations.
http://www.opus1.com/www/jms/iw-apr97.html
Ok, found the link to the current ARIN fee schedule for IP address blocks. They are
not free, far from it.
http://www.arin.net/registration/fee_schedule.html
Also see this, the overview of the process of obtaining IPv4 addresses from ARIN, for anyone that is interested.
http://www.arin.net/library/training/isp_initial/index.html
Ironically, in not switching to IPv6, firms may actually be paying more money, as these costs for IPv4 addresses can only increase, as available allocations decrease, whereas the IPv6 address space is... nearly as open and free as the wind, so to speak. Not to mention the administrative overhead cost of managing multiple layers of NAT, and and lack of productivity dealing with network failure modes arising from the complex NAT structures of an organization, and the lack of true end-to-end connectivity for communications, not to mention security.