marka at isc.org
Tue Feb 23 23:14:35 UTC 2021
IPv4AAS will also work easily for any ISP on the planet.
CGNAT requires IPv4 address space between the CGNAT and the customer CPE which doesn’t overlap with that on the Internet nor that behind the CPE (no you can’t use RFC 1918). 100.64/10 gives you ~4M addresses which fit this criteria but that isn’t enough without reuse for the larger ISPs.
IPv4AAS uses no IPv4 addresses between the B4/NAT64/… and the CPE.
You should also be able to out source IPv4AAS to specialist providers. There is no requirement to run your own hardware. You just populate your DHCPv6/RA/IPV4ONLY.ARPA with the correct information and the traffic will be delivered to the specialist providers. I’m not sure if there are any out there yet but it is a business opportunity for anyone that is already running such boxes.
> On 24 Feb 2021, at 09:43, Owen DeLong <owen at delong.com> wrote:
> That’s provably not true if the IPv4AAS implementation is done carefully.
>> On Feb 19, 2021, at 12:11 PM, Tony Wicks <tony at wicks.co.nz> wrote:
>> Because then a large part of the Internet won't work....
>> From: NANOG <nanog-bounces+tony=wicks.co.nz at nanog.org> on behalf of Mark Andrews <marka at isc.org>
>> Sent: Saturday, 20 February 2021, 9:04 am
>> To: Steve Saner
>> Cc: nanog at nanog.org
>> Subject: Re: CGNAT
>> Why not go whole hog and provide IPv4 as a service? That way you are not waiting for your customers to turn up IPv6 to take the load off your NAT box.
>> Yes, you can do it dual stack but you have waited so long you may as well miss that step along the deployment path.
>> Mark Andrews
>>> On 20 Feb 2021, at 01:55, Steve Saner <ssaner at ideatek.com> wrote:
>>> We are starting to look at CGNAT solutions. The primary motivation at the moment is to extend current IPv4 resources, but IPv6 migration is also a factor.
>>> We've been in touch with A10. Just wondering if there are some alternative vendors that anyone would recommend. We'd probably be looking at a solution to support 5k to 15k customers and bandwidth up to around 30-40 gig as a starting point. A solution that is as transparent to user experience as possible is a priority.
>>> Steve Saner
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