nanog mailing list archives
Re: IPv6 woes - RFC
From: Bjørn Mork <bjorn () mork no>
Date: Fri, 10 Sep 2021 09:21:26 +0200
Owen DeLong via NANOG <nanog () nanog org> writes:
The addresses aren’t the major cost of providing IPv4 services. CGN boxes, support calls, increasing size of routing table = buying new routers, etc.
You're counting dual-stack costs as if IPv4 was the optional protocol. That's a fantasy world. Time to get out of la-la land now. Your edge routers can do CGN for all connected users just fine. Yes, there is still a cost both in resources and management, but you'll have to weigh that against the cost of doing dual-stack on the same box. I'm not convinced dual-stack wins. Don't know what you're thinking of wrt support calls, but dual-stack has some failure modes which are difficult to understand for both end users and support. NAT is pretty well understood in comparison. Your routing tables won't grow with IPv4 or CGN. They grow when you add IPv6.
Increased cost of developers having to work around NAT and NAT becoming ever more complex with multiple layers, etc.
And this can be avoided by reconfiguring the local network somehow? Or are we talking about an Internet without IPv4? This is even more fantastic than the idea that IPv4 is optional in the local network.
All of these are the things driving the ever increasing cost of IPv4 services, not just the cost of the addresses.
Yes, the cost of addresses is not prohibitive, and there is no indication it will be. The consolidation of hosting services have reduced the need for globally routable addresses. You don't host your own mail server and web server anymore, even if you're a large organisation. Most ISPs haven't yet taken advantage of this. They are still giving globally routable IPv4 addresses to customers which have no need for that. These addresses can be re-allocated for CGN if there is a need. This is obviously still not free, but it does limit the price of fresh IPv4 addresses. The other costs you list will not affect an IPv4 only shop at all. Bjørn
Current thread:
- Re: IPv6 woes - RFC, (continued)
- Re: IPv6 woes - RFC Carsten Bormann (Sep 16)
- Re: IPv6 woes - RFC Mark Tinka (Sep 13)
- Re: IPv6 woes - RFC Owen DeLong via NANOG (Sep 13)
- Re: IPv6 woes - RFC Bill Woodcock (Sep 08)
- Re: IPv6 woes - RFC John Levine (Sep 08)
- Re: IPv6 woes - RFC Owen DeLong via NANOG (Sep 08)
- Re: IPv6 woes - RFC Fred Baker (Sep 11)
- Re: IPv6 woes - RFC Owen DeLong via NANOG (Sep 08)
- Re: IPv6 woes - RFC Niels Bakker (Sep 08)
- Re: IPv6 woes - RFC Owen DeLong via NANOG (Sep 08)
- Re: IPv6 woes - RFC Bjørn Mork (Sep 10)
- Re: IPv6 woes - RFC Mark Andrews (Sep 10)
- Re: IPv6 woes - RFC Owen DeLong via NANOG (Sep 19)
- Re: IPv6 woes - RFC sronan (Sep 06)
- if not v6, what? Michael Thomas (Sep 05)
- Re: if not v6, what? Grant Taylor via NANOG (Sep 05)
- Re: if not v6, what? Eric Kuhnke (Sep 07)
- Re: if not v6, what? Mark Tinka (Sep 07)
- Re: if not v6, what? Masataka Ohta (Sep 07)
- Re: if not v6, what? Niels Bakker (Sep 07)
- Re: fun with ports, was if not v6, what? John Levine (Sep 07)