[ipv6-wg] [atlas] What to do with RIPE Atlas probes that have only a ULA as IPv6 address?

Hi,

On 2015-03-25 17:31, Philip Homburg wrote:
> The RIPE Atlas team has a question what to do with probes that have 
> only
> a Unique Local IPv6 Unicast Address (ULA) [RFC4193] as their IPv6
> address. The question is whether to treat those probes as IPv6 capable
> or not.

[...]

> Currently they are regarded as having broken IPv6 connectivity. 
> However,
> an alternative is to consider those probes as having no IPv6 at all.

do you think it is worth considering to use different tags in order to 
describe different aspects? For example an "ipv6-ula-only" tag and an 
"ipv6-global-internet-reachability" tag.

Assigning the "IPv6 Doesn't Work" tag just on the basis of the ULA-only 
criteria would exclude those (few?) probes having ULA but also global 
IPv6 reachability, perhaps through some kind of NAT (NPTv6).

Different tags may offer a finer granularity on the probes selection 
process, for example it would allow to run tests on probes with ULA 
behind an IPv6 NAT box. It also allows to have statistics on ULA usage.  
At the same time it would be still possible to run measurements on 
"global-only" probes by selecting ipv6-global-internet-reachability and 
explicitly filtering out ipv6-ula-only.

Regards,

-- 
Pier Carlo Chiodi
http://pierky.com