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Iran Goes Into IPv6 Blackout

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Re: Iran Goes Into IPv6 Blackout

#51

Post by stackskipton »

School-Cotton wrote: post #12
ronsor wrote: post #7

No competent network engineer wants to work in Iran, so government doesn't know how to block v6 properly. End result: just get rid of it entirely!

Why would they want to block IPv6 specifically?

It's much more difficult to block.

A lot of anti censorship organizations have trouble getting more IPv4 /24 for cost reasons or moving it around to different AS since they would go offline.

With IPv6, you can get IPv6 /40 from ARIN/RIPE no problem. You slice that up into /48 and just start bouncing it all over the place. When one /48 goes down, you move everything to another /48, switch providers if required and continue.

EDIT: They also tend to get multiple blocks as well for when ISP figures out to root /40.

Re: Iran Goes Into IPv6 Blackout

#52

Post by jccx70 »

dogma1138 wrote: post #11
giancarlostoro wrote: post #10

Stuxnet v2? Speculation I know, but wow, IPv4 came back up, but IPv6 is completely out, looks like 48 million devices? Compared to IPv4's 47 thousand (wow that's insane). Looking at IPv6 its not 0 exactly, looks like probably censorship, only some devices allowed online? Some other comment mentioned there's calls to protest again today.

No, it is the Iranian government shutting down the internet.

[flagged]

Re: Iran Goes Into IPv6 Blackout

#53

Post by ReptileMan »

falaki wrote: post #47
tuhgdetzhh wrote: post #45

Earlier quoted context omitted.

Isn't it possible to jam the starlink receiver?

I hear after the Ukraine war, Starlink became very good at thwarting jamming. I am confident the Iranians are not as sophisticated as the Russians in than front.

The Russians are themselves heavy users of starlink.

Re: Iran Goes Into IPv6 Blackout

#54

Post by GaggiX »

falaki wrote: post #30

Fortunately, the government cannot enforce complete blackout because thousands of startlink terminals are active inside the country. They have been complaining about it [1] to no avail. Using these terminals activists and journalists continue to upload videos of demonstrations to social media which has enabled analyses that show demonstrations are very wide spread [2] and continue to grow. [1] https://www.itu.int/en/…

They are almost completely inaccessible to the average Iranian. A friend of mine who has come a long way to fight Iranian censorship told me that they essentially don't exist.

Re: Iran Goes Into IPv6 Blackout

#55

Post by throw0101d »

falaki wrote: post #47
tuhgdetzhh wrote: post #45

Earlier quoted context omitted.

Isn't it possible to jam the starlink receiver?

I hear after the Ukraine war, Starlink became very good at thwarting jamming. I am confident the Iranians are not as sophisticated as the Russians in than front.

[flagged]

Re: Iran Goes Into IPv6 Blackout

#56

Post by ReptileMan »

mywittyname wrote: post #39
immibis wrote: post #34

Earlier quoted context omitted.

Most likely they just go to the head of the ISP (I bet there's only one) and say turn the internet off or else.

You assume threats need to be made. One doesn't get to be the head of a business in a country like Iran without being a True Believer.

I doubt there are many true believers. Most of the top brass are probably driven from sf interest. But loyalty is beyond doubt. At least until the regime is winning

Re: Iran Goes Into IPv6 Blackout

#57

Post by tguvot »

falaki wrote: post #30

Fortunately, the government cannot enforce complete blackout because thousands of startlink terminals are active inside the country. They have been complaining about it [1] to no avail. Using these terminals activists and journalists continue to upload videos of demonstrations to social media which has enabled analyses that show demonstrations are very wide spread [2] and continue to grow. [1] https://www.itu.int/en/…

in 2019 internet shutdown happened just before crackdown on protests

Re: Iran Goes Into IPv6 Blackout

#58

Post by helloaltalt »

marcosdumay wrote: post #31
School-Cotton wrote: post #27

Earlier quoted context omitted.

That doesn't explain why they would want to block IPv6 specifically , and not also block IPv4.

The OP's comment is that they can censor IPv4 when they want, but they don't know how to censor IPv6. So they block it entirely.

Thanks this really explains the situation.

Re: Iran Goes Into IPv6 Blackout

#60

Post by EthanHeilman »

tuhgdetzhh wrote: post #45
falaki wrote: post #30

Fortunately, the government cannot enforce complete blackout because thousands of startlink terminals are active inside the country. They have been complaining about it [1] to no avail. Using these terminals activists and journalists continue to upload videos of demonstrations to social media which has enabled analyses that show demonstrations are very wide spread [2] and continue to grow. [1] https://www.itu.int/en/…

Isn't it possible to jam the starlink receiver?

Yes, but it is more difficult than jamming a typical radio antenna because the starlink uses a directed beam rather than a omnidirectional radio broadcast. This either requires enormous amounts of power, targeting the satellite itself with a directed radio beam, or getting between the satellite and the ground station by bouncing a signal off the ionosphere.

The above is for jamming directed beams in general. It is likely that starlink has a number of other jamming countermeasures.

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