[atlas] Notification for probes going down for extended period??

Hi,

I have been hosting probes for many years and, judging by the traffic 
seen, they have seen a fair amount of use, which is good.

Despite being on a "home network", I was able to get a small subnet so 
the probes could run without NAT state nastyness and all.

Unfortunately, the ISP providing home connectivity is changing. They 
used to be innovative, offering IPv6, subnet and lots of features. 
However the mother telco decided that innovation was bad and is changing 
the service offering, killing innovative services one by one.
Today I received notification that the subnet the probes live on, will 
be de-activated on Jan 11.

I've cancelled my subscription with said ISP on Jan 13 and the house 
will be on a different ISP then, unfortunately the new ISP is planning 
to provide subnet service but is in the process of setting things up and 
cannot provide subnet service today.

What is the protocol for signalling "this probe is down and that may be 
for quite a bit"?

And what is the protocol for signalling "this probe is now on a 
different topology, is no longer on AS3265 and network performance is 
different"?

(I guess several others will have this question, answers on list please)

Geert Jan