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Iran Goes Into IPv6 Blackout

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Re: Iran Goes Into IPv6 Blackout

#31
post #25

Earlier quoted context omitted.

There are some pretty big protests happening right now: https://bsky.app/profile/chadbourn.bsky.social/post/3mbvphn4...

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.

Re: Iran Goes Into IPv6 Blackout

#33
post #20

Earlier quoted context omitted.

How so?

It’s intended to be human readable, but it’s not and its slow adoption is proof of that. A random 10 digit string would arguably be better.

You mean base64? 10 digits is only 10 billion addresses

Re: Iran Goes Into IPv6 Blackout

#34

Government enacted shut down due to protests. I'd like to hear more about how they actually do this. https://www.cbsnews.com/news/iran-cutting-internet-amid-dead...

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.

Re: Iran Goes Into IPv6 Blackout

#35
post #25

Earlier quoted context omitted.

There are some pretty big protests happening right now: https://bsky.app/profile/chadbourn.bsky.social/post/3mbvphn4...

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

A lot of the Starlink and other contraband uplinks are using ipv6, allowing connectivity for people the regime doesn't want to have contact with the rest of the world. They don't want the revolution broadcast or popularized.

Re: Iran Goes Into IPv6 Blackout

#36
post #15

Earlier quoted context omitted.

(going with recent ipv6 discussion) they probably failed to make it work properly and decided that it's easier to block it

Is this an attempt at a joke, or do you actually seriously believe a country capable of enriching uranium isn't capable of hiring competent network engineers?

i'll leave it as exercise to a reader

Re: Iran Goes Into IPv6 Blackout

#38

Government enacted shut down due to protests. I'd like to hear more about how they actually do this. https://www.cbsnews.com/news/iran-cutting-internet-amid-dead...

You might then enjoy this story that was on the front page a couple of days ago:

https://news.ycombinator.com/item?id=46505352

Re: Iran Goes Into IPv6 Blackout

#39
post #34

Government enacted shut down due to protests. I'd like to hear more about how they actually do this. https://www.cbsnews.com/news/iran-cutting-internet-amid-dead...

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.

Re: Iran Goes Into IPv6 Blackout

#40

Earlier quoted context omitted.

Why would they want to block IPv6 specifically?

IDK for sure, but might be harder to maintain, monitor, and block. One characteristic of v4 is it's somewhat reasonable to do a straight forward block on a range of addresses to shut down access. This is still somewhat possible with v6, but harder as there's simply a much larger portion of ip addresses that can be all over the place. It's theoretically a lot easier for anyone that wants to bypass a simple filter to g…

Otoh, ipv6 address assignment tends to be much more contiguous. My (small) residential ISP has one v6 prefix but several v4 prefixes. If you block the whole prefix for services you don't like, it's far less prefixes for v6.

But, it is a new skill, and you can turn off v6 at small cost if you're already ok with heavily restricting v4.

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