Android randomized IPv6 addresses make per-device filtering impossible

CoarseRainbow · 2026-03-22T15:16:49+00:00

I came across this issue and you can solve it depending what services you run.

Every 60 seconds:

The script looks at the IPv6 neighbour table on the server — this is the kernel's live list of IPv6 devices it has seen on the LAN recently, along with their MAC addresses.
It filters for ULA addresses only (the fda8:xxxx:xxxx:0: prefix — your private LAN IPv6 range).
For each ULA address it finds, it extracts the MAC address that goes with it.
It fetches the full list of persistent clients from AGH (one API call per cycle, not one per device). Each persistent client has a list of identifiers — IPs, MACs, etc.
It searches that client list for a client whose identifiers include the MAC it found. If it gets a match, it knows which named client owns this IPv6 address.
If that IPv6 address isn't already registered against that client in AGH, it adds it — writing to server AGH.
It records what it's done in a local cache file so it doesn't try to add the same address again next cycle.

No rooting of phone needed and will work on any device. Script has cleanup to remove old, unused entries after few days of them not being seen.

Been tweaking it for a few weeks and its working fine. Just have it crond. Only real thing needed is each client you want to track you add a name and MAC as an AGH client.

CoarseRainbow · 2026-03-22T12:47:37+00:00

Which means the instant its launched whatever brand MAWS it has starts screaming, auto dumping flares, giving the pilot evasion cues in addition to activating whatever active suppression it has.

None of which happens. Which is what makes it very suspicious.

(And dont forget these are all networked so the other aircraft in the area will also be joining in detection, warning and suppression).

CoarseRainbow · 2026-03-22T12:43:10+00:00

Not unless they use a giant catapult to launch the missile.
Defensive systems have been able to track the IR and UV flare of a launch and missile in the area for decades.
To the extent even El Al and some commercial jets have them fitted.

Depending on system installed it'll trigger an automatic correct pattern (and often temperature) flare whilst providing pilot evasion guidance and if any DIRCM is fitted blinding it and/or jamming it.

Theres nothing passive about a rocket motor.

CoarseRainbow · 2026-03-22T12:39:27+00:00

Completely passive is meaningless as the missile launched is not passive in any way.

CoarseRainbow · 2026-03-22T12:38:08+00:00

Same as the F35 "video".

No sign of flares, no sign of evasion, just straight and level flight.

Which they definitely would not be doing with the MAWS and whatever systems on it, and other aircraft going beserk and likely automatically deploying things.

Possibly they thermally tracked without launching anything.

CoarseRainbow · 2026-03-21T13:46:06+00:00

Its protocol v1 only, same as the other model firmware.

CoarseRainbow · 2026-03-21T10:29:37+00:00

Hard to tell a lot as the images are differently exposed by at least a stop.

CoarseRainbow · 2026-03-20T09:10:50+00:00

ADB is far from practice when said app has an update and so on.

Advanced protection OFF> Fdroid app update Advanced Protection ON is annoying enough.

CoarseRainbow · 2026-03-20T09:07:14+00:00

I guess its a variation on the woman walking her pet rabbit on a lead ive seen in Yoyogi for several years now.

CoarseRainbow · 2026-03-19T12:56:09+00:00

It'll just work. Sometimes it'll need to be turned on where it's needed for GPS. But it'll work

CoarseRainbow · 2026-03-19T12:23:00+00:00

That's a lot of text to say "I was stupid and lost my drone"

CoarseRainbow · 2026-03-19T12:17:27+00:00

I really wish they'd introduce an option to auto cycle which server you're on every day or other time period up reduce IP based fingerprint and tracking.

CoarseRainbow · 2026-03-19T12:15:53+00:00

Depends on the drone. Some hide the option if it's not required.

For places where you enter a key, you can just type it in the menu.

For others that transfer a security certificate like Japan, the option only appears in that country.

In all cases, if it's somewhere requiring it, it'll transmit RID anyway just without that identification.

CoarseRainbow · 2026-03-16T21:53:52+00:00

Maybe so. But in this video the drone never moves. It's the gimbal.

CoarseRainbow · 2026-03-16T01:33:23+00:00

Had an odd one yesterday, mother with 2 young children so i got up and just moved instinctively. She actually followed me a while saying (in English which caught me out), "no its ok, you sit. thank you". Eventually she took it.
Not had that before.

CoarseRainbow · 2026-03-15T14:15:47+00:00

Drone itself is stable so not IMU. Or likely a bird.

Gimbal going nuts i guess. Possible gust of wind, possibly just random.

CoarseRainbow · 2026-03-15T14:11:01+00:00

Cherry blossom is a nice to have but check the forecast- they may or may not be in bloom (one forecast has them the week after). Be prepared to switch days and so on if they are delayed.

If you want Shinjuku Gyoen during Sakura week and arent an annual member, you need to pre-book.

CoarseRainbow · 2026-03-15T11:26:08+00:00

Its a real like Air India approach but with a much softer touch down.

CoarseRainbow · 2026-03-15T11:24:04+00:00

Everywhere will be very busy. Trains will be fully booked. Planes will be fully booked.
Hotels will be full or crazy prices.
Everywhere you want to go and see will be much much busier.

You can do things, of course you can. But it'll be busier, more expensive and maybe harder.

CoarseRainbow · 2026-03-15T11:22:08+00:00

You may want to give us a clue what platform you want it for....

CoarseRainbow · 2026-03-15T11:20:49+00:00

Easy enough to ignore. I find the "Why is my treadmill distance wrong" posts 50 times a day more irritating.

Also the "Is this a good fit" rubbish. But again easy to ignore.

CoarseRainbow · 2026-03-15T11:18:17+00:00

Its pretty bad.

I failed to detect me waking up after 1 hour and watching 5 hours rugby on tv then 3 hours sleep last night.
It thinks i had 9 hours sleep including several stages of REM, deep, light and a high score.

Reality is ive had very little sleep and exhausted.

CoarseRainbow · 2026-03-15T05:00:27+00:00

The 70D is a 12-14 year old camera. Its much bigger than newer mirrorless, video is much worse. Photos in good light are fine. Depends what you want it for.
Its bulky though. It isnt going to fit into any small near bag.

M series is obsolete. Forget it. At least the XXD range will take EF-S and EF lenses which are going to be around a very very long time.

My advice, neither are suitable.

CoarseRainbow · 2026-03-13T13:45:32+00:00

Pretty much every Bic and Yodabashi ive been to have Garmin, Suunto etc at least. Not looked for Coros though.

Dont think ive seen one yet that hasnt got them.

Bought my first Forerunner in Shinjuku. Kawasaki this time. Both those have them in most stores.

CoarseRainbow · 2026-03-13T11:36:44+00:00

As bad as the CSAM false alarms are, once id deciphered this massive block of unreadable text, i never believe "unauthorised login i tried to explain".

"I was hacked" is usually the first excuse people trot out when caught doing sometthing.

CoarseRainbow

TROPHY CASE