[atlas] Probe 2285 is disconnected (Randy/Bainbridge Comcast)

i keep getting these

> Your probe 2285 has been disconnected from the RIPE Atlas
> infrastructure since 2020-03-18 06:43:44 UTC.

status shows it down

but i can ping6 the probe, and from the local gateway, i can ping4
it's natted address

psg.com:/usr/home/randy> ping6  2601:600:c680:2fe:220:4aff:fee0:246d
PING6(56=40+8+8 bytes) 2001:418:1::62 --> 2601:600:c680:2fe:220:4aff:fee0:246d
16 bytes from 2601:600:c680:2fe:220:4aff:fee0:246d, icmp_seq=0 hlim=56 time=13.533 ms
16 bytes from 2601:600:c680:2fe:220:4aff:fee0:246d, icmp_seq=1 hlim=56 time=12.370 ms

root at wrt-biwa:~# ping 192.168.0.27
PING 192.168.0.27 (192.168.0.27): 56 data bytes
64 bytes from 192.168.0.27: seq=0 ttl=64 time=0.921 ms
64 bytes from 192.168.0.27: seq=1 ttl=64 time=0.701 ms

network tab shows a long history of very short disconnects

there is a strat 1 sitting on the same lan, and a lot of chimers out in
the world think the strat 1 is preferred.  no, that is not a definitive
test in any way, but it's all i can think of at my current caffeine
level.

comcast?  modem?  v1 probe?

how to better diagnose?

randy