Poll on SMTP over IPv6 Usage

Marco d'Itri md at Linux.IT
Wed Feb 19 13:10:57 CET 2014

On Feb 19, Daniel Roesen <dr at cluenet.de> wrote:

> This is btw standard setup in the DOCSIS world. All CPEs get a single IP
> out of a shared /64. In case the CPE is not a customer PC but a router
> (most customers have that), of course DHCPv6-PD is used to issue
> prefixes. Nevertheless, there is a non-insignificant amount of people
> directly attaching their PCs directly to cable modems.
This does not really matter wrt mail since nobody sane accepts it from 
dynamically-assigned addresses, but:

> The assumption "everyone inside a /64 is the same subject" is flawed,
> indeed.
Operators who do this should use the assignment-size attribute.

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